Sodium hydroxide
CAS: 1310-73-2 

mp	681 °C(lit.)
bp	145 °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.	2-8°C

Basic chemical raw materials, used as a lot reagents, widely used in chemical industry, metallurgy, paper making, oil, textile and daily chemical and other departments