di-SODIUM TETRABORATE DECAHYDRATE (BORAX)
di-SODIUM TETRABORATE DECAHYDRATE (BORAX) AR/ACS
Buffer substance.
Short Name: di-SODIUM TETRABORATE DECAHYDRATE (BORAX)
Synonym: Sodium tetraborate decahydrate; Borax decahydrate; Sodium borate decahydrate
Basic Details
Article No.
LG0772
Grade
AR/ACS
Purity
99.5%
CAS No.
1303-96-4
HS Code
2840.1100
Shelf Life
60 Months
Packings Avialable
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
Chemical 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 & Hazard Symbols
Symbol
GHS08
Signal Word
Danger
Hazardous Statement
H360FD
Precaution Statement
P201-P308 + P313