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BORIC ACID Molecular Biology

Orthoboric acid

Article No. 02221 Grade Molecular Biology
Purity 99.5% CAS No. 10043-35-3
Molecular Formula H3BO3 Molecular Weight 61.83
H.S. Code 2810.0020 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour White powder
Odour Odorless pH value 3.8 - 4.8
Melting point/ Freezing point [°C] 160 °C Boiling point [°C] 300 °C
Vapour pressure [20°C] 3.5 hPa at 20 °C Density [g/cm3] 1.44
Solubility in water [% weight] Soluble in water


Appearance White powder / crystals / crystalline powder Assay (acidimetric) Min 99.5%
DNases (exo and endonucleases) None detected Insoluble matter Passes filter test
Non-volatile substances in MeOH/HCl Max 0.05% Phosphatase None detected
RNases None detected Loss on drying (at 120°C) Max 0.5%
Solubility (1 M in water) Complete,colourless pH (saturated solution in water) 3.6 - 4.6
Chloride (Cl) Max 0.0005% Phosphate (PO4) Max 0.0005%
Sulphate (SO4) Max 0.0005% Heavy metal (as Pb) Max 0.0005%
Arsenic (As) Max 0.00005% Sodium (Na) Max 0.005%
UV absorbance 1 M in water Wavelength Max. Absorbance
260 nm 0.015 280 nm 0.010

Safety Information and Hazard Symbols

Health Hazard
Symbol: GHS08
Signal Word: Danger
Hazardous Statement: H360FD
Precaution Statement: P201-P202-P280-P308+P313-P405-P501
Revision Date: 08-May-2024

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