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1330-43-4

Name Sodium tetraborate
CAS 1330-43-4
EINECS(EC#) 215-540-4
Molecular Formula B4Na2O7
MDL Number MFCD00081185
Molecular Weight 201.22
MOL File 1330-43-4.mol

Chemical Properties

Appearance Borax is a noncombustible (an inherent fire retardant), bluish-gray or green, odorless crystalline powder or granules.
Melting point  741 °C(lit.)
Boiling point  1575°C
density  2.367 g/mL at 25 °C(lit.)
vapor pressure  7.3 hPa (1200 °C)
refractive index  1.501
Fp  1575°C
storage temp.  Store at +5°C to +30°C.
solubility  H2O: 0.1 M at 20 °C, clear, colorless
form  Solid
color  White
Specific Gravity 2.367
PH 9.0-10.5 (25℃, 0.1M in H2O)
Stability: Stable. Incompatible with powdered metals.
Water Solubility  26 g/L (20 ºC)
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: ≤0.020
λ: 280 nm Amax: ≤0.015
Merck  14,8590
Exposure limits ACGIH: TWA 2 mg/m3; STEL 6 mg/m3
NIOSH: TWA 1 mg/m3
InChIKey UQGFMSUEHSUPRD-UHFFFAOYSA-N
Uses
sodium borate is a preservative and emulsifier with astringent and anti-septic properties. It is also used as a pH adjuster. Sodium borate is the sodium salt of boric acid. It may cause skin dryness and irritation.
NIST Chemistry Reference Sodium borate(1330-43-4)
EPA Substance Registry System Boron sodium oxide (B4Na2O7)(1330-43-4)

Safety Data

Hazard Codes  Xn,Xi,T
Risk Statements 
Safety Statements 
OEB C
OEL TWA: 1 mg/m3
RIDADR  UN 1760 8/PG 2
WGK Germany  1
RTECS  ED4588000
34
TSCA  Yes
HS Code  28401100
Safety Profile
A nuisance dust. Experimental reproductive effects. When heated to decomposition it emits toxic vapors of B.
Hazardous Substances Data 1330-43-4(Hazardous Substances Data)

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