Manganese(II) chloride

Athanor · official

Cl₂Mn · 125.84 g/mol

IUPAC name: manganese(2+) dichloride

Inorganic

Open in Athanor

Drawn from its SMILES with RDKit

DangerToxic if swallowed · Harmful if swallowed · Causes serious eye damage · May causes damage to organs through prolonged or repeated exposure · Toxic to aquatic life with long lasting effects

Names and identifiers

IUPAC name: manganese(2+) dichloride
Synonyms: Manganese(II)chloride, manganese(2+) dichloride, MFCD00011114
+ 23 more
DTXSID9040681, Cl2Mn, Manganese(2+);dichloride, MnCl2.xH2O, manganous chloride hydrate, SCHEMBL9218, orb1221274, orb3177672, MANGANESE CHLORIDE [MI], MANGANESE(2+) CHLORIDE, manganese(2+) dichloride hydrate, Manganese(II) chloride (MnCl2), MANGANOUS CHLORIDE, ANHYDR, MANGANOUS CHLORIDE ANHYDROUS, MANGANESE CHLORIDE [WHO-DD], AKOS015904562, FM39681, MANGANESE CHLORIDE ANHYDROUS [HSDB], M2095, NS00076460, T5011, F494385, manganese chloride, manganese ii chloride, manganese 2+ ion dichloride, manganesechloride
Molecular formula: Cl₂Mn
Empirical formula: Cl₂Mn
Molecular weight: 125.84 g/mol
Exact mass: 124.87575
CAS number: 7773-01-5
PubChem CID: 10313134
Canonical SMILES: [Cl-].[Cl-].[Mn+2]
Isomeric SMILES: [Cl-].[Cl-].[Mn+2]
InChI: InChI=1S/2ClH.Mn/h2*1H;/q;;+2/p-2
InChIKey: GLFNIEUTAYBVOC-UHFFFAOYSA-L
Molfile

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

Calculated

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

Elemental analysis

Cl56.34%
Mn43.66%

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: -5.99 Crippen (Wildman and Crippen 1999)
log S (water solubility): 3.16 ESOL (Delaney 2004), log mol/L
Synthetic accessibility: 8.31 SA score, 1 easy to 10 hard (Ertl and Schuffenhauer 2009)

Drug-likeness: Lipinski’s rule of five

Molecular weight ≤ 500: 125.84
log P ≤ 5 (Crippen): -5.99
H-bond donors ≤ 5: 0
H-bond acceptors ≤ 10: 0

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

Most widely reported: 319 company reports to ECHA. Source [2].

Corrosive
Acute toxicity
Harmful or irritant
Health hazard
Environmental hazard

H301Toxic if swallowed (56.1% of reports)
H302Harmful if swallowed (42.9% of reports)
H318Causes serious eye damage (59.9% of reports)
H373May causes damage to organs through prolonged or repeated exposure (62.4% of reports)
H411Toxic to aquatic life with long lasting effects (39.8% of reports)

Precautionary statements: P260, P264, P264+P265, P270, P273, P280, P301+P316, P301+P317, P305+P354+P338, P317, P319, P321, P330, P391, P405, P501

View all classifications (2)

[2] European Chemicals Agency (ECHA)This chemical does not meet GHS hazard criteria for 0.9% (3 of 319) of reports.
[2] European Chemicals Agency (ECHA) · 319 reports · DangerH301, H302, H318, H373, H411

Exposure limits

IDLH: 500 mg/cu m (manganese compounds and fume (as Mn))[1]

Incompatibilities

Zinc foil reacts explosively when heated with anhydrous manganese dichloride.[1]

Safety data sheets on the supplier’s page: Hairui Chemical, Alfa Chemistry, Strem Chemicals, Inc..

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

Literature

Reading PubChem, OpenAlex and GSRS…

Bioactivity

Reading ChEMBL…

References

[1]Hazardous Substances Data Bank (HSDB) · Public domain (US NLM) · via PubChem · retrieved 2026-10-14
[2]European Chemicals Agency (ECHA) · ECHA legal notice: reuse with acknowledgement · 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.