Home Categories Inorganic chemistry Sodium tetraborate decahydrate
A7321012

Sodium tetraborate decahydrate , ACS , 1303-96-4

Synonym(s):
Borax decahydrate;Sodium borate decahydrate;di-Sodium tetraborate decahydrate;Sodium Borate, Decahydrate;Sodium Tetraborate, Dodecahydrate, Borax

CAS NO.:1303-96-4

Empirical Formula: B4H20Na2O17

Molecular Weight: 381.37

MDL number: MFCD00149193

EINECS: 603-411-9

Pack Size Price Stock Quantity
500G RMB31.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 75 °C
Boiling point: 320°C
Density  1.73 g/mL at 25 °C(lit.)
vapor pressure  0.213 hPa (20 °C)
storage temp.  2-8°C
solubility  H2O: 0.1 M at 20 °C, clear, colorless
form  Powder/Solid
Specific Gravity 1.73
color  White, gray, bluish or greenish white
PH 9.21(1 mM solution);9.17(10 mM solution);9.05(100 mM solution);
Odor Odorless
PH Range 9.2
Water Solubility  60 g/L (20 ºC)
λmax λ: 260 nm Amax: 0.012
λ: 280 nm Amax: 0.010
Merck  14,8590
Exposure limits ACGIH: TWA 2 mg/m3; STEL 6 mg/m3
NIOSH: TWA 5 mg/m3
InChIKey CDMADVZSLOHIFP-UHFFFAOYSA-N

Description and Uses

Borax is a noncombustible (an inherent fireretardant), bluish-gray or green, odorless crystalline powderor granules. Molecular weight=301.37; Boilingpoint=320℃; Freezing/Melting point=75℃ (rapid heating). Borax is soluble in water; solubility=6% at 20℃.Borax pentahydrate is a white crystalline solid or free-flowing powder. Odorless. Molecular weight=291.4; Specificgravity (H2O:1)=1.82; Melting Point: 200℃; Density:1.82 g/cm3. Soluble in water; solubility=3%.

Buffers; complexing or masking agent.

Safety

Symbol(GHS) 
GHS07,GHS08
Signal word  Danger
Hazard statements  H319-H360FD
Precautionary statements  P202-P264-P280-P305+P351+P338-P308+P313-P337+P313
Hazard Codes  Xn,T
Risk Statements  62-61-60
Safety Statements  22-24/25-36/37-45-53
OEB B
OEL TWA: 5 mg/m3
RIDADR  UN 1458
WGK Germany  1
RTECS  VZ2275000
TSCA  Yes
HS Code  28401990
Toxicity LD50 orally in rats: 5.66 g/kg (Smyth)

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