Sodium tetraborate decahydrate, ACS, 99.5-105.0%

CAS Number 1303-96-4 Synonyms
  • Borax
  • Sodium borate (tetra) decahydrate
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Sodium tetraborate decahydrate, ACS, 99.5-105.0%

MDL: MFCD00149193
EINECS: 215-540-4

Chemical Properties

Formula: B4Na2O7•10H2O  Melting point: 75°
Formula weight: 381.37 (201.22anhy)  Density: 1.73
Form: Powder Solubility: Soluble in water, glycerol. Insoluble in alcohol


100° -5H2O, 150° -9H2O, 320° -10H2O

Grade Specs

Maximum level of impurities: Insoluble matter 0.005%, Cl 0.001%, PO4 0.001%, SO4 0.005%, Ca 0.005%, Heavy Metals (as Pb) 0.001%, Fe 5ppm, pH of a 0.01M solution 9.15-9.20 at 25°

GHS Hazard and Precautionary Statements

Hazard Statements : H360

May damage fertility or the unborn child.

Precautionary Statements : P281-P201-P202-P308+P313-P405-P501A

Use personal protective equipment as required. Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. IF exposed or concerned: Get medical advice/attention. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Health Hazard

Other References

Merck: 14,8590
Harmonized Tariff Code: 2840.19
RTECS: VZ2275000


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