Sodium Tetraborate Decahydrate Powder

EP, USP (Tested for Endotoxin & Microbes)

CAS #:


Molecular Formula:

Na2B4O7 • 10H2O


Borax, Sodium Borate, Decahydrate

Molecular Weight:

381.37 g/mol


Sodium Borate, Decahydrate, Powder, also known as borax or sodium tetraborate, is a white crystalline powder that easily dissolves in water. Sodium borate has many uses including but not limited to; detergents, cosmetics, enamel glazes, fire retardant, and a texturing agent in cooking. As an ACS grade quality reagent, its chemical specifications are the de facto standards for chemicals used in many high-purity applications and typically designate the highest quality chemical available for laboratory use.

Characters Unit Specification
Appearance white or almost white, crystalline powder
Assay % 99,0-105,0
Identification complies
Appearance of solution clear and colourless
pH value (solution S) 9,0- 9,6
Sulphates ppm max. 50
Ammonium ppm max. 10
Arsenic ppm max. 5
Calcium ppm max. 100
Heavy metals ppm max. 20
Carbonates and Bicarbonates ppm complies
Total aerobic microbial count IU/g max. 100
Total yeasts and moulds count cfu/g max. 50
E.coli cfu/g absent in 1g
Pseudomonas aeruginosa cfu/g absent in 1g
Staphylococcus aureus cfu/g absent in 1g
Salmonella cfu/g absent in 25g
Bacterial endotoxine IU/g max.10

Shelf Life/Retest Date: Sodium Tetraborate Decahydrate can be kept for at least 2 years if stored under recommended conditions.

Storage/Shipping Conditions:

  • Keep container tightly closed in a dry and well-ventilated place.
  • Keep in a dry place at ambient temperature.
  • Use shelves or cabinets sturdy enough to bear the weight

Pack Sizes: 0.5 Kg and 1 Kg

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