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di-SODIUM TETRABORATE DECAHYDRATE (BORAX) AR/ACS

Buffer substance.
Sodium tetraborate decahydrate; Borax decahydrate; Sodium borate decahydrate

COAs

Packings

500 g (00500)

5000 g (05000)

25 Kg (0025K)

50 Kg (0050K)

1PW1200500 1PW1206500 1PDL00040K 1PDLP0065K
Print friendly version
Article No. 06038 Grade AR/ACS
Purity 99.5% CAS No. 1303-96-4
Molecular Formula Na2B4O7.10H2O Molecular Weight 381.37
H.S. Code 2840.1100 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour White crystalline
Odour Odorless pH value 9.2
Melting point/ Freezing point [°C] 62 °C Boiling point [°C] 320°C
Density [g/cm3] 1.73 Solubility in water [% weight] 39 g/l at 20 °C - completely soluble

Specifications

Appearance A white crystalline powder Assay (acidimetric) 99.5 - 103%
Identity Passes test Clarity of solution Passes test
Insoluble matter Max 0.005% pH (0.01 M solution; 25°C) 9.15 - 9.20
pH (4% solution in water) 9.0 - 9.6 Chloride (Cl) Max 0.0007%
Phosphate (PO4) Max 0.001% Sulphate (SO4) Max 0.005%
Heavy metal (as Pb) Max 0.001% Arsenic (As) Max 0.0005%
Calcium (Ca) Max 0.005% Copper (Cu) Max 0.0005%
Iron (Fe) Max 0.0005% Ammonium (NH4) Max 0.001%
Lead (Pb) Max 0.0005%

Safety Information and Hazard Symbols

Health Hazard
Symbol: GHS08
 Signal Word: Danger
 Hazardous Statement: H360FD
 Precaution Statement: P201-P308 + P313
Revision Date: 16-May-2014

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