Calcium hydroxide CAS#1305-62-0

Calcium hydroxide Chemical Properties

Boiling point 

2850 °C

density 

2.24 g/mL at 25 °C (lit.)

bulk density

400kg/m3

refractive index 

1.574

storage temp. 

Store at +5°C to +30°C.

solubility 

1.7g/l

form 

Solid

pka

12.6[at 20 ℃]

color 

White

Odor

Odorless

PH Range

12.4

PH

11.27(1 mM solution);12.2(10 mM solution);12.46(100 mM solution);

Water Solubility 

1.65 g/L (20 ºC)

Sensitive 

Air Sensitive

Merck 

14,1673

Solubility Product Constant (Ksp)

pKsp: 5.26

Exposure limits

ACGIH: TWA 5 mg/m3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3
NIOSH: TWA 5 mg/m3

Stability:

Stable. Incompatible with strong acids.

Cosmetics Ingredients Functions

BUFFERING

CAS DataBase Reference

1305-62-0(CAS DataBase Reference)

NIST Chemistry Reference

Calcium dihydroxide(1305-62-0)

EPA Substance Registry System

Calcium hydroxide (1305-62-0)

Safety Information

Risk Statements 

41-34-37/38

Safety Statements 

26-39-45-36/37/39-27

OEB

B

OEL

TWA: 5 mg/m3

WGK Germany 

1

RTECS 

EW2800000

F 

34

TSCA 

TSCA listed

HS Code 

2825 90 19

Hazardous Substances Data

1305-62-0(Hazardous Substances Data)

Toxicity

LD50 orally in rats: 7.34 g/kg (Smyth)