Hydrogen peroxide

Athanor · official

H₂O₂ · 34.015 g/mol

Also called peroxide, dihydrogen dioxide

Inorganic

Open in Athanor

Drawn from its SMILES with RDKit

DangerMay cause fire or explosion; strong Oxidizer · Harmful if swallowed · Causes severe skin burns and eye damage · Harmful if inhaled

Names and identifiers

IUPAC name: hydrogen peroxide
Synonyms: peroxide, dihydrogen dioxide, oxydol
+ 37 more
perhydrol, Superoxol, Interox, Hydrogen dioxide, Inhibine, Peroxaan, Albone, Hioxyl, Kastone, H2O2, Albone 35, Albone DS, Dihydrogen dioxide, T-Stuff, Elawox, Lensept, Perone, Albone 35CG, Albone 50, Albone 50CG, Albone 70, Albone 70CG, Perone 50, Peroxan, Hydrogen peroxide (H2O2), Perone 30, Perone 35, Waterstofperoxyde, Wasserstoffperoxid, Peroxyde d'hydrogene, Oxyfull, Perossido di idrogeno, Eskata, Hyrogen peroxide, Astri-UC, High Test Peroxide, Teat dip HP 5
Molecular formula: H₂O₂
Empirical formula: HO
Molecular weight: 34.015 g/mol
Exact mass: 34.00548
CAS number: 7722-84-1
PubChem CID: 784
Canonical SMILES: OO
Isomeric SMILES: OO
InChI: InChI=1S/H2O2/c1-2/h1-2H
InChIKey: MHAJPDPJQMAIIY-UHFFFAOYSA-N
Molfile

Names, InChI and the identifiers from PubChem, retrieved 2026-10-14.

Physical properties

TemperaturePressureDensity

Appearance: At low temperatures a crystalline solid /90% solution/[6]
10 values
From Hazardous Substances Data Bank (HSDB), the most authoritative source here.
Value As written Source
– Hydrogen peroxide, aqueous solution, stabilized, with more than 60% hydrogen peroxide appears as a colorless liquid. Vapors may irritate the eyes and mucous membranes. Under prolonged exposure to fire or heat containers may violently rupture due to decomposition. Used to bleach textiles and wood pulp, in chemical manufacturing and food processing. [1] CAMEO Chemicals
– Hydrogen peroxide, aqueous solution, with not less than 20% but not more than 60% hydrogen peroxide (stabilized as necessary) appears as colorless aqueous solution. Vapors may irritate the eyes and mucous membranes. Contact with most common metals and their compounds may cause violent decomposition, especially in the higher concentrations. Contact with combustible materials may result in spontaneous ignition. Prolonged exposure to fire or heat may cause decomposition and rupturing of the container. Used to bleach textiles and wood pulp, in chemical manufacturing and food processing. [1] CAMEO Chemicals
– Hydrogen peroxide solution is the colorless liquid dissolved in water. Its vapors are irritating to the eyes and mucous membranes. The material, especially the higher concentrations, can violently decompose in contact with most common metals and their compounds. Contact with combustible materials can result in spontaneous ignition. Under prolonged exposure to fire or heat containers may violently rupture due to decomposition of the material. It is used to bleach textiles and wood pulp, in chemical manufacturing and food processing. [1] CAMEO Chemicals
– Hydrogen peroxide, stabilized appears as a crystalline solid at low temperatures. Has a slightly pungent, irritating odor. Used in the bleaching and deodorizing of textiles, wood pulp, hair, fur, etc. as a source of organic and inorganic peroxides; pulp and paper industry; plasticizers; rocket fuel; foam rubber; manufacture of glycerol; antichlor; dyeing; electroplating; antiseptic; laboratory reagent; epoxidation; hydroxylation; oxidation and reduction; viscosity control for starch and cellulose derivatives; refining and cleaning metals; bleaching and oxidizing agent in foods; neutralizing ag [1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
– CBI; Liquid [2] EPA Chemical Data Reporting (CDR)
– COLOURLESS LIQUID. [3] ILO-WHO International Chemical Safety Cards (ICSCs)
– Colorless liquid with a slightly sharp odor. [4] Occupational Safety and Health Administration (OSHA)
– Colorless liquid with a slightly sharp odor. [Note: The pure compound is a crystalline solid below 12 °F. Often used in an aqueous solution.] [5] The National Institute for Occupational Safety and Health (NIOSH)
–shown At low temperatures a crystalline solid /90% solution/ [6] Hazardous Substances Data Bank (HSDB)cites Lewis, R.J. Sr. (ed) Sax's Dangerous Properties of Industrial Materials. 12th Edition. Wiley-Interscience, Wiley & Sons, Inc. Hoboken, NJ. 2012., p. V4: 2434
– Colorless liquid ... [Note: The pure compound is a crystalline solid below 12 degrees F. Often used in an aqueous solution] [6] Hazardous Substances Data Bank (HSDB)cites NIOSH. NIOSH Pocket Guide to Chemical Hazards. Department of Health & Human Services, Centers for Disease Control & Prevention. National Institute for Occupational Safety & Health. DHHS (NIOSH) Publication No. 2010-168 (2010). Available from: https://www.cdc.gov/niosh/npg
Odor: ... Slightly sharp odor ...[6]
2 values
From Hazardous Substances Data Bank (HSDB), the most authoritative source here.
Value As written Source
–shown ... Slightly sharp odor ... [6] Hazardous Substances Data Bank (HSDB)cites NIOSH. NIOSH Pocket Guide to Chemical Hazards. Department of Health & Human Services, Centers for Disease Control & Prevention. National Institute for Occupational Safety & Health. DHHS (NIOSH) Publication No. 2010-168 (2010). Available from: https://www.cdc.gov/niosh/npg
– Odorless, or having an odor resembling that of ozone [6] Hazardous Substances Data Bank (HSDB)cites Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 1092
Melting point: -11 °C (90%), -39 °C (70%)[3]
6 values
3 of 5 sources agree on it (most common value).
Value As written Source
−0.4 °C 31.3 °F (NTP, 1992) [1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
−1 to 4 °C 31 to 40 °F for concentrations greater than 52% (EPA, 1998) [1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
−11 °Cshown -11 °C (90%), -39 °C (70%) [3] ILO-WHO International Chemical Safety Cards (ICSCs)
−11 °C 12 °F [4] Occupational Safety and Health Administration (OSHA)
−0.4 °C -0.43 °C [7] PAC Chemical Database, U.S. Department of Energy
−11 °C 12 °F [5] The National Institute for Occupational Safety and Health (NIOSH)
Boiling point: 141 °C (90%)[3]
7 values
3 of 5 sources agree on it (most common value).
Value As written Source
150.2 °C 302.4 °F at 760 mmHg (NTP, 1992) [1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
152 °C 306 °F at 760 mmHg [1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
126 °C 258 °F for concentrations greater than 52% (EPA, 1998) [1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
141 °Cshown 141 °C (90%) [3] ILO-WHO International Chemical Safety Cards (ICSCs)
141 °C 286 °F [4] Occupational Safety and Health Administration (OSHA)
150.2 °C 150.2 °C @760 [mm Hg] [7] PAC Chemical Database, U.S. Department of Energy
141 °C 286 °F [5] The National Institute for Occupational Safety and Health (NIOSH)
Density: Relative density (water = 1): 1.4 (90%)[3]
6 values
4 of 5 sources agree on it (most common value).
Value As written Source
– 1.11 at 68 °F (NTP, 1992) - Denser than water [1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
– 1.463 at 32 °F 1.29/1.3 at 68F for concentrations greater than 52% (EPA, 1998) - Denser than water [1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
–shown Relative density (water = 1): 1.4 (90%) [3] ILO-WHO International Chemical Safety Cards (ICSCs)
– 1.39 [4] Occupational Safety and Health Administration (OSHA)
– 1.44 @25 °C [7] PAC Chemical Database, U.S. Department of Energy
– 1.39 [5] The National Institute for Occupational Safety and Health (NIOSH)
1 more value was reported but failed the checks (unreadable or out of range), so it is not shown.
Solubility in water: Solubility in water: miscible[3]
6 values
From ILO-WHO International Chemical Safety Cards (ICSCs), the most authoritative source here.
Value As written Source
– greater than or equal to 100 mg/mL at 72 °F (NTP, 1992) [1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
– Miscible (NIOSH, 2024) [1] CAMEO Chemicals
– In water, 1X10+6 mgL at 25 °C [6] Hazardous Substances Data Bank (HSDB)cites Radding SB et al; Review of The Environmental Fate of Selected Chemicals. NTIS 68-01-2681 (1977)
– For more Solubility (Complete) data for Hydrogen peroxide (6 total), please visit the HSDB record page. [6] Hazardous Substances Data Bank (HSDB)
–shown Solubility in water: miscible [3] ILO-WHO International Chemical Safety Cards (ICSCs)
– Miscible [5] The National Institute for Occupational Safety and Health (NIOSH)
log P: -1.36[3]
Vapor pressure: VP: 1 mmHg at 15.3 °C[6]
6 values
2 of 4 sources agree on it (most common value).
Value As written Source
1 mmHg 1 mmHg at 59.5 °F (NTP, 1992) [1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
1 mmHg 1 mmHg at 59.54 °F (EPA, 1998) [1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
1 mmHgshown VP: 1 mm Hg at 15.3 °C [6] Hazardous Substances Data Bank (HSDB)cites Lewis, R.J. Sr. (ed) Sax's Dangerous Properties of Industrial Materials. 12th Edition. Wiley-Interscience, Wiley & Sons, Inc. Hoboken, NJ. 2012., p. V4: 2434
1.97 mmHg 1.97 mm Hg at 25 °C [6] Hazardous Substances Data Bank (HSDB)cites Daubert, T.E., R.P. Danner. Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, D.C.: Taylor and Francis, 1989.
5 mmHg 5 mmHg at 86 °F [4] Occupational Safety and Health Administration (OSHA)
0.75 mmHg 0.75 [mm Hg] @13 °C [7] PAC Chemical Database, U.S. Department of Energy
2 more values were reported but failed the checks (unreadable or out of range), so they are not shown.
Autoignition temperature: Reported, but no value passed the checks.
The value and why
Not flammable. (USCG, 1999) (could not be read; source [1])
Viscosity: 1.819 cP at 0 °C[6]
2 values
Only one source reports it.
Value As written Source
–shown 1.819 cP at 0 °C [6] Hazardous Substances Data Bank (HSDB)cites Goor G et al; Hydrogen Peroxide. Ullmann's Encyclopedia of Industrial Chemistry. 7th ed. (1999-2017). New York, NY: John Wiley & Sons. Online Posting Date: 15 Apr 2007
– 1.249 cP at 20 °C [6] Hazardous Substances Data Bank (HSDB)cites Goor G et al; Hydrogen Peroxide. Ullmann's Encyclopedia of Industrial Chemistry. 7th ed. (1999-2017). New York, NY: John Wiley & Sons. Online Posting Date: 15 Apr 2007

Value	As written	Source
–	Hydrogen peroxide, aqueous solution, stabilized, with more than 60% hydrogen peroxide appears as a colorless liquid. Vapors may irritate the eyes and mucous membranes. Under prolonged exposure to fire or heat containers may violently rupture due to decomposition. Used to bleach textiles and wood pulp, in chemical manufacturing and food processing.	[1] CAMEO Chemicals
–	Hydrogen peroxide, aqueous solution, with not less than 20% but not more than 60% hydrogen peroxide (stabilized as necessary) appears as colorless aqueous solution. Vapors may irritate the eyes and mucous membranes. Contact with most common metals and their compounds may cause violent decomposition, especially in the higher concentrations. Contact with combustible materials may result in spontaneous ignition. Prolonged exposure to fire or heat may cause decomposition and rupturing of the container. Used to bleach textiles and wood pulp, in chemical manufacturing and food processing.	[1] CAMEO Chemicals
–	Hydrogen peroxide solution is the colorless liquid dissolved in water. Its vapors are irritating to the eyes and mucous membranes. The material, especially the higher concentrations, can violently decompose in contact with most common metals and their compounds. Contact with combustible materials can result in spontaneous ignition. Under prolonged exposure to fire or heat containers may violently rupture due to decomposition of the material. It is used to bleach textiles and wood pulp, in chemical manufacturing and food processing.	[1] CAMEO Chemicals
–	Hydrogen peroxide, stabilized appears as a crystalline solid at low temperatures. Has a slightly pungent, irritating odor. Used in the bleaching and deodorizing of textiles, wood pulp, hair, fur, etc. as a source of organic and inorganic peroxides; pulp and paper industry; plasticizers; rocket fuel; foam rubber; manufacture of glycerol; antichlor; dyeing; electroplating; antiseptic; laboratory reagent; epoxidation; hydroxylation; oxidation and reduction; viscosity control for starch and cellulose derivatives; refining and cleaning metals; bleaching and oxidizing agent in foods; neutralizing ag	[1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
–	CBI; Liquid	[2] EPA Chemical Data Reporting (CDR)
–	COLOURLESS LIQUID.	[3] ILO-WHO International Chemical Safety Cards (ICSCs)
–	Colorless liquid with a slightly sharp odor.	[4] Occupational Safety and Health Administration (OSHA)
–	Colorless liquid with a slightly sharp odor. [Note: The pure compound is a crystalline solid below 12 °F. Often used in an aqueous solution.]	[5] The National Institute for Occupational Safety and Health (NIOSH)
–shown	At low temperatures a crystalline solid /90% solution/	[6] Hazardous Substances Data Bank (HSDB)cites Lewis, R.J. Sr. (ed) Sax's Dangerous Properties of Industrial Materials. 12th Edition. Wiley-Interscience, Wiley & Sons, Inc. Hoboken, NJ. 2012., p. V4: 2434
–	Colorless liquid ... [Note: The pure compound is a crystalline solid below 12 degrees F. Often used in an aqueous solution]	[6] Hazardous Substances Data Bank (HSDB)cites NIOSH. NIOSH Pocket Guide to Chemical Hazards. Department of Health & Human Services, Centers for Disease Control & Prevention. National Institute for Occupational Safety & Health. DHHS (NIOSH) Publication No. 2010-168 (2010). Available from: https://www.cdc.gov/niosh/npg

Value	As written	Source
–shown	... Slightly sharp odor ...	[6] Hazardous Substances Data Bank (HSDB)cites NIOSH. NIOSH Pocket Guide to Chemical Hazards. Department of Health & Human Services, Centers for Disease Control & Prevention. National Institute for Occupational Safety & Health. DHHS (NIOSH) Publication No. 2010-168 (2010). Available from: https://www.cdc.gov/niosh/npg
–	Odorless, or having an odor resembling that of ozone	[6] Hazardous Substances Data Bank (HSDB)cites Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 1092

Value	As written	Source
−0.4 °C	31.3 °F (NTP, 1992)	[1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
−1 to 4 °C	31 to 40 °F for concentrations greater than 52% (EPA, 1998)	[1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
−11 °Cshown	-11 °C (90%), -39 °C (70%)	[3] ILO-WHO International Chemical Safety Cards (ICSCs)
−11 °C	12 °F	[4] Occupational Safety and Health Administration (OSHA)
−0.4 °C	-0.43 °C	[7] PAC Chemical Database, U.S. Department of Energy
−11 °C	12 °F	[5] The National Institute for Occupational Safety and Health (NIOSH)

Value	As written	Source
150.2 °C	302.4 °F at 760 mmHg (NTP, 1992)	[1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
152 °C	306 °F at 760 mmHg	[1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
126 °C	258 °F for concentrations greater than 52% (EPA, 1998)	[1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
141 °Cshown	141 °C (90%)	[3] ILO-WHO International Chemical Safety Cards (ICSCs)
141 °C	286 °F	[4] Occupational Safety and Health Administration (OSHA)
150.2 °C	150.2 °C @760 [mm Hg]	[7] PAC Chemical Database, U.S. Department of Energy
141 °C	286 °F	[5] The National Institute for Occupational Safety and Health (NIOSH)

Value	As written	Source
–	1.11 at 68 °F (NTP, 1992) - Denser than water	[1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
–	1.463 at 32 °F 1.29/1.3 at 68F for concentrations greater than 52% (EPA, 1998) - Denser than water	[1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
–shown	Relative density (water = 1): 1.4 (90%)	[3] ILO-WHO International Chemical Safety Cards (ICSCs)
–	1.39	[4] Occupational Safety and Health Administration (OSHA)
–	1.44 @25 °C	[7] PAC Chemical Database, U.S. Department of Energy
–	1.39	[5] The National Institute for Occupational Safety and Health (NIOSH)

Value	As written	Source
–	greater than or equal to 100 mg/mL at 72 °F (NTP, 1992)	[1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
–	Miscible (NIOSH, 2024)	[1] CAMEO Chemicals
–	In water, 1X10+6 mgL at 25 °C	[6] Hazardous Substances Data Bank (HSDB)cites Radding SB et al; Review of The Environmental Fate of Selected Chemicals. NTIS 68-01-2681 (1977)
–	For more Solubility (Complete) data for Hydrogen peroxide (6 total), please visit the HSDB record page.	[6] Hazardous Substances Data Bank (HSDB)
–shown	Solubility in water: miscible	[3] ILO-WHO International Chemical Safety Cards (ICSCs)
–	Miscible	[5] The National Institute for Occupational Safety and Health (NIOSH)

Value	As written	Source
1 mmHg	1 mmHg at 59.5 °F (NTP, 1992)	[1] CAMEO Chemicalscites National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.
1 mmHg	1 mmHg at 59.54 °F (EPA, 1998)	[1] CAMEO Chemicalscites U.S. Environmental Protection Agency. 1998. Extremely Hazardous Substances (EHS) Chemical Profiles and Emergency First Aid Guides. Washington, D.C.: U.S. Government Printing Office.
1 mmHgshown	VP: 1 mm Hg at 15.3 °C	[6] Hazardous Substances Data Bank (HSDB)cites Lewis, R.J. Sr. (ed) Sax's Dangerous Properties of Industrial Materials. 12th Edition. Wiley-Interscience, Wiley & Sons, Inc. Hoboken, NJ. 2012., p. V4: 2434
1.97 mmHg	1.97 mm Hg at 25 °C	[6] Hazardous Substances Data Bank (HSDB)cites Daubert, T.E., R.P. Danner. Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, D.C.: Taylor and Francis, 1989.
5 mmHg	5 mmHg at 86 °F	[4] Occupational Safety and Health Administration (OSHA)
0.75 mmHg	0.75 [mm Hg] @13 °C	[7] PAC Chemical Database, U.S. Department of Energy

Value	As written	Source
–shown	1.819 cP at 0 °C	[6] Hazardous Substances Data Bank (HSDB)cites Goor G et al; Hydrogen Peroxide. Ullmann's Encyclopedia of Industrial Chemistry. 7th ed. (1999-2017). New York, NY: John Wiley & Sons. Online Posting Date: 15 Apr 2007
–	1.249 cP at 20 °C	[6] Hazardous Substances Data Bank (HSDB)cites Goor G et al; Hydrogen Peroxide. Ullmann's Encyclopedia of Industrial Chemistry. 7th ed. (1999-2017). New York, NY: John Wiley & Sons. Online Posting Date: 15 Apr 2007

Each value as its source reports it, with the source's number after it (listed under References). Where several sources report a property, the row shows the value most of them agree on, the rule the app uses; open the values to see every one.

Calculated

Heavy atoms: 2
Rings: 0
Aromatic rings: 0
Fraction sp³ carbons (Fsp3): 0
H-bond donors: 2
H-bond acceptors: 2
Rotatable bonds: 0
TPSA (Å²): 40.5
Formal charge: 0
XLogP3: -0.9 PubChem
Complexity: 0 PubChem
Stereocenters: None
Double-bond geometry: None specified
Point group: C2 of one 3D conformer with its hydrogens, by Athanor’s engine (as in the app)

Elemental analysis

H5.93%
O94.07%

Isotope pattern

Each peak is a nominal mass with its abundance-weighted exact mass, as a percentage of the tallest, from IUPAC natural isotope abundances.

Computed from the structure with RDKit 2026.09 when this page was built, beside PubChem's own computed values from its record; where the two differ, both are shown.

Predicted

log P: 0.02 Crippen (Wildman and Crippen 1999)
log S (water solubility): -0.06 ESOL (Delaney 2004), log mol/L
Synthetic accessibility: 3.07 SA score, 1 easy to 10 hard (Ertl and Schuffenhauer 2009)

Drug-likeness: Lipinski’s rule of five

Molecular weight ≤ 500: 34.01
log P ≤ 5 (Crippen): 0.02
H-bond donors ≤ 5: 2
H-bond acceptors ≤ 10: 2

Passes all four rules.

Predictions, not measurements; each names its method. A measured log P, where a source reports one, is under Physical properties.

Safety

Danger

Harmonized EU classification (CLP Annex VI). Source [8].

Oxidizer
Corrosive
Harmful or irritant

NFPA 704[4]

H271May cause fire or explosion; strong Oxidizer
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H332Harmful if inhaled

Precautionary statements: P210, P220, P260, P261, P264, P270, P271, P280, P283, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P306+P360, P316, P317, P321, P330, P363, P370+P378, P371+P380+P375, P405, P420, P501

View all classifications (4)

[8] Regulation (EC) No 1272/2008 of the European Parliament and of the Council · DangerH271, H302, H314, H332
[9] European Chemicals Agency (ECHA)This chemical does not meet GHS hazard criteria for 0.1% (2 of 1964) of reports.
[9] European Chemicals Agency (ECHA) · 1,964 reports · DangerH271, H302, H314, H318, H332, H335, H412
[6] Hazardous Substances Data Bank (HSDB) · DangerH314, H318, H335, H402, H412

Exposure limits

PEL-TWA (8-Hour Time Weighted Average): 1 ppm (1.4 mg/m³)[4]
PEL: TWA 1 ppm (1.4 mg/m3)[5]
TLV: 1 ppm as TWA; A3 (confirmed animal carcinogen with unknown relevance to humans).[3]
TLV-TWA (Time Weighted Average): 1 ppm [1990][4]
IDLH: 75 ppm [From npg: Hydrogen peroxide] (NIOSH, 2024)[1]
IDLH: 75 ppm (NIOSH, 2024)[1]

First aid

Excerpt from ERG Guide 143 [Oxidizers (Unstable)]: Refer to the "General First Aid" section. Specific First Aid: Contaminated clothing may be a fire risk when dry. (ERG, 2024)[1]
Eyes: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. Immediately transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. Skin: Immediately flood affected skin with water while removing and isolating all contaminated clothing.[1]
Excerpt from ERG Guide 140 [Oxidizers]: Refer to the "General First Aid" section. Specific First Aid: Contaminated clothing may be a fire risk when dry. (ERG, 2024)[1]
Signs and Symptoms of Acute Hydrogen Peroxide Exposure: Signs and symptoms of acute exposure to hydrogen peroxide may be severe and include irritation or burns to the skin, eyes, respiratory tract, mouth, esophagus, stomach, and intestines. Distension or rupture of the stomach and other hollow viscera may occur; vomiting is common. Corneal ulceration may develop. Emergency Life-Support Procedures: Acute exposure to hydrogen peroxide may require decontamination and life support for the victims.[1]

Storage

Store in an area without drain or sewer access. Separated from food and feedstuffs. See Chemical Dangers. Cool. Keep in the dark. Store in vented containers. Store only if stabilized.[3]
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Recommended storage temperature 2 - 8 °C. /Hydrogen peroxide solution (>/= 30% to <50%)/[6]
Store in original closed container. Be sure that the container vent is working properly. Do not add any other compound to the container. When empty, flush container thoroughly with clean water.[6]
Hydrogen peroxide topical solution should be stored in tight, light-resistant containers at 15-30 °C. To ensure greater stability, the inside surfaces of containers should be as free as possible from rough points since these promote decomposition.[6]

Incompatibilities

Incompatible materials: Zinc, powdered metals, iron, copper, nickel, brass, iron and iron salts. /Hydrogen peroxide solution (>/= 30% to <50%)/[6]
Ignition on contact with furfuryl alcohol; powdered metals (e.g., magnesium; iron); wood. Violent reaction with aluminum isopropoxide + heavy metal salts; charcoal; coal; dimethylphenylphosphine; hydrogen selenide; lithium tetrahydroaluminate; metals (e.g., potassium, sodium, lithium); metal oxides (e.g., cobalt oxide, iron oxide, lead oxide, lead hydroxide, manganese oxide, mercury oxide, nickel oxide); metal salts (e.g., calcium permanganate); methanol + phosphoric acid; 4-methyl-2,4,6-triazatricyclo [5.2.2.0(2,6)] undeca-8-ene-3,5-dione + potassium hydroxide; alpha-phenylselenoketones;…[6]
Oxidizable materials, iron, copper, brass, bronze, chromium, zinc, lead, silver, manganese [Note: Contact with combustible material may result in spontaneous combustion].[6]
Most cellulose materials contain enough catalyst to cause spontaneous ignition with 90% peroxide. ... Soluble fuels (acetone, ethanol, and glycerol) will detonate on admixture with peroxide of over 30% concentration, the violence increasing with concentration. Handling systems must exclude fittings of iron, brass, copper, Monel, and screwed joints caulked with red lead. ... Addition of charcoal to concentrated hydrogen peroxide results in violent decompositon.[6]

Always read the supplier’s safety data sheet before working with it.

Spectra

Experimental spectra held by these sources; each link opens the source's own record.

Literature

Reading PubChem, OpenAlex and GSRS…

Bioactivity

Reading ChEMBL…

References

[1]CAMEO Chemicals · Public domain (NOAA) · via PubChem · retrieved 2026-10-14
[2]EPA Chemical Data Reporting (CDR) · Public domain (US EPA) · via PubChem · retrieved 2026-10-14
[3]ILO-WHO International Chemical Safety Cards (ICSCs) · CC BY 4.0 · via PubChem · retrieved 2026-10-14
[4]Occupational Safety and Health Administration (OSHA) · Public domain (US DOL) · via PubChem · retrieved 2026-10-14
[5]The National Institute for Occupational Safety and Health (NIOSH) · Public domain (US CDC) · via PubChem · retrieved 2026-10-14
[6]Hazardous Substances Data Bank (HSDB) · Public domain (US NLM) · via PubChem · retrieved 2026-10-14
[7]PAC Chemical Database, U.S. Department of Energy · Public domain (US DOE) · via PubChem · retrieved 2026-10-14
[8]Regulation (EC) No 1272/2008 of the European Parliament and of the Council · EU reuse policy, CC BY 4.0 · via PubChem · retrieved 2026-10-14
[9]European Chemicals Agency (ECHA) · ECHA legal notice: reuse with acknowledgement · via PubChem · retrieved 2026-10-14
[10]Emergency Response Guidebook (ERG) · Public domain (US DOT) · via PubChem · retrieved 2026-10-14
[11]SpectraBase · Linked only · via PubChem · retrieved 2026-10-14
·Calculated values: computed by Athanor with RDKit 2026.09 from the structure.
·Literature on PubChem

Data last updated 2026-10-14.