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40114 1303-96-4 Sodium tetraborate decahydrate, ACS, 99.5-105.0% Borax Sodium borate (tetra) decahydrate Alfa Aesar


Certificate of Analysis

Sodium tetraborate decahydrate, ACS, 99.5-105.0%

CAS: 1303-96-4 MDL: MFCD00149193  EINECS: 215-540-4
Not regulated for shipping
Alternate Name: Borax
Sodium borate (tetra) decahydrate


Pricing and Availability

Size ($) Price Your Price Quantity Options Availability
500g 32.00 Check Availability Add to Favorites Enter qty and click checkbox

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°

Other References

Merck: 14,8590
Harmonized Tariff Code: 2840.19

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

Risk & Safety

Risk Phrases: 60-61
May impair fertility. May cause harm to the unborn child.
Safety Phrases: 53-45
Avoid exposure - obtain special instructions before use. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
RTECS: VZ2275000