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Product Information

Basic information about this product

Article No. 006886
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

Product Description

Detailed information about the product

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