PRODUCT IDENTIFICATION

CAS NO.

1330-43-4, 12447-40-4 (Anhydrous)
11130-12-4 (Pentahydrate)
1303-96-4 (Decahydrate)

 

EINECS NO.

215-540-4 (Anhydrous)
271-536-2 (Decahydrate)

FORMULA

Na₂B₄O₇.10H₂O

MOL WT.

381.4

HS CODE

2840.19

TOXICITY

Oral Rat LD50 : 2660 mg/kg 

SYNONYMS

Borax; Borates, Tetrasodium Salts, Decahydrate

Sodium Tetraborate Decahydrate, Sodium Pyroborate Decahydrate; Sodium Tetraborate Decahydrate; Disodium Tetraborate Decahydrate; Sodium Borate Decahydrate; Fused Borax; Dinatriumtetraborat (German); Tetraborato de disodio (Spanish); Tétraborate de disodium (French);

 

 

 

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white crystals or crystalline powder

MELTING POINT

741 C

BOILING POINT

1,575 C

SPECIFIC GRAVITY

1.73

SOLUBILITY IN WATER

slightly soluble in cold water; very soluble in hot water; (insoluble in acids)

pH

weak base (9.15 - 9.20)

 

 

 

NFPA RATINGS

Health: 1; Flammability: 0; Reactivity: 0 

STABILITY

Stable under ordinary conditions

APPLICATIONS

Mild Antiseptic, Cleansing Agent, Water Softener, Corrosion Inhibitor for Antifreeze, Flux for Silver Soldering, Manufacture of Enamels, Shellacs, Heat-resistant Glass (e.g., Pyrex), Fertilizers, Pharmaceuticals, and other chemicals, Preservative but toxic if consumed in large doses.

SALES SPECIFICATION

APPEARANCE

white powder

PURITY

99.5% min

B₂O₃

36,47 % min

Na₂O

16,47 % min

Na₂CO₃

0.2% max

Na₂SO₄

0.2% max

WATER-INSOLUBLES

0.04% max

CI

0.05% max

Fe

0.002% max

 

PACKING

25kgs in Bag  20mts in container

UN NO.

Not regulated