Sodium hydroxide CAS#1310-73-2

Boiling point 

1390°C

density 

1.515 g/mL at 20 °C

vapor density 

<1 (vs air)

vapor pressure 

1 mm Hg ( 745 °C)

refractive index 

1,473-1,475

Fp 

176-178°C

storage temp. 

room temp

solubility 

H2O: 1 M at 20 °C, clear, colorless

form 

beads

color 

White

Specific Gravity

2.13

Odor

Odorless

PH

10.98(1 mM solution);11.95(10 mM solution);12.88(100 mM solution);

PH Range

13 - 14

Water Solubility 

SOLUBLE

λmax

λ: 260 nm Amax: 0.015
λ: 280 nm Amax: 0.01

Sensitive 

Air Sensitive & Hygroscopic

Decomposition 

176-178 ºC

Merck 

14,8627

Exposure limits

TLV-TWA air 2 mg/m3 (OSHA); ceiling 2 mg/m3 (ACGIH) and 2 mg/m3/15 min (NIOSH).

Dielectric constant

57.5（25℃）

Stability:

hygroscopic

CAS DataBase Reference

1310-73-2(CAS DataBase Reference)

NIST Chemistry Reference

Sodium hydroxide(1310-73-2)

EPA Substance Registry System

Sodium hydroxide (1310-73-2)

Risk Statements 

36/38-35-34

Safety Statements 

26-45-37/39-24/25-36/37/39

OEL

Ceiling: 2 mg/m3

RIDADR 

UN 1824 8/PG 2

WGK Germany 

1

RTECS 

TT2975000

F 

8

TSCA 

Yes

HS Code 

2815 11 00

HazardClass 

8

PackingGroup 

II

Hazardous Substances Data

1310-73-2(Hazardous Substances Data)

Toxicity

LD orally in rabbits: 500 mg/kg (10% soln) (Fazekas)

IDLA

10 mg/m3