Calcium hydroxide CAS NO.1305-62-0

Calcium hydroxide Chemical Properties

Melting point	580 °C
Boiling point	2850 °C
density	2.24 g/mL at 25 °C (lit.)
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.
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

Hazard Codes	Xi,C
Risk Statements	41-34-37/38
Safety Statements	26-39-45-36/37/39-27
RIDADR	3262
OEB	B
OEL	TWA: 5 mg/m3
WGK Germany	1
RTECS	EW2800000
F	34
TSCA	Yes
HS Code	2825 90 19
HazardClass	8
PackingGroup	III
Hazardous Substances Data	1305-62-0(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 7.34 g/kg (Smyth)

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