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Sodium hydroxide Structure

Sodium hydroxide

Product NameSodium hydroxide

CAS1310-73-2

CBNumberCB8105015

MFNaOH

MW39.99711

EINECS215-185-5

MDL NumberMFCD00011405

MOL File1310-73-2.mol

MSDS FileSDS

Chemical Properties

Melting point 681 °C(lit.)
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
Flash point 176-178°C
storage temp.  room temp
solubility  H2O: 1 M at 20 °C, clear, colorless
form  beads
Specific Gravity 2.13
color  White
Odor Odorless
PH Range 13 - 14
PH 10.98(1 mM solution);11.95(10 mM solution);12.88(100 mM solution);
Water Solubility  SOLUBLE
Sensitive  Air Sensitive & Hygroscopic
Decomposition  176-178 ºC
λmax λ: 260 nm Amax: 0.015
λ: 280 nm Amax: 0.01
Merck  14,8627
Exposure limits TLV-TWA air 2 mg/m3 (OSHA); ceiling 2 mg/m3 (ACGIH) and 2 mg/m3/15 min (NIOSH).
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)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H290-H314
Precautionary statements P234-P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard Codes  C,Xi
Risk Statements  36/38-35-34
Safety Statements  26-45-37/39-24/25-36/37/39
RIDADR  UN 1824 8/PG 2
WGK Germany  1
RTECS  TT2975000
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
NFPA 704:
0
3 1

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