Title:  Manganese Chloride
CAS Registry Number:  7773-01-5
Synonyms:  Manganous chloride;  manganese dichloride
Molecular Formula:  Cl2Mn
Molecular Weight:  125.84
Percent Composition:  Cl 56.35%, Mn 43.66%
Line Formula:  MnCl2
Literature References:  Acute toxicity studies:  D. J. Holbrook, Jr. 
et al., Environ. Health Perspect. 10, 95 (1975); P. P. Singh, A. Y. Junnarkar, 
Indian J. Pharmacol. 23, 153 (1991).
Properties:  LD50 in mice, rats (mg/kg):  1330.0, 1470.0 orally; 126.0, 147.0 i.p.; 171.0, 92.6 i.v. (Singh, Junnarkar).
Toxicity data:  LD50 in mice, rats (mg/kg):  1330.0, 1470.0 orally; 126.0, 147.0 i.p.; 171.0, 92.6 i.v. (Singh, Junnarkar)
 
Derivative Type:  Tetrahydrate 
CAS Registry Number:  13446-34-9
Molecular Formula:  Cl2Mn.4H2O
Molecular Weight:  197.91
Percent Composition:  Cl 35.83%, Mn 27.76%, H 4.07%, O 32.34%
Properties:  Reddish, slightly deliquesc, monoclinic crystals.  d 2.01.  mp 58°.  Sol in 0.7 part water; sol in alcohol.  Insol in ether.  pH of 0.2 molar aq soln 5.5.  
Keep well closed.  LD 50 in rats (mmole/kg):  7.5 orally; 0.70 i.p. (Holbrook).
Melting point:  mp 58°
Density:  d 2.01
Toxicity data:  LD 50 in rats (mmole/kg):  7.5 orally; 0.70 i.p. (Holbrook)
 
Use:  In dyeing (manganese bister); disinfecting; purifying natural gas; linseed oil drier; in electric batteries.