Boric Acid, Powder, NF is used as an antimicrobial preservative, a buffering agent and as a tonicity adjusting agent. It is a weak acid of boron often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds. It exists in the form of colorless crystals or a white powder that dissolves in water. Boric acid is poisonous if taken internally or inhaled in large quantities.
Characters | Unit | Specification |
---|---|---|
Appearance | white or almost white, crystalline powder | |
Assay (EP) | % | 99,0 – 100,5 |
Assay (USP) | % | 99,5 – 100,5 |
Identification A | complies | |
Identification B | complies | |
Appearance of solution | clear and colourless | |
pH-value (for solution S, Ph. Eur.) | 3,8 – 4,8 | |
Solubility in ethanol-96% | complies | |
Organic matter | complies | |
Sulphate | ppm | max. 450 |
Heavy metals | ppm | max. 20 |
Loos on drying (USP) | % | max. 0,5 |
Completeness of solution (USP) | complies | |
Total aerobic microbial count | cfu/g | max. 100 |
Total yeasts and moulds count | cfu/g | max. 50 |
E.coli | cfu/g | absent in 1g |
Pseudomonas aeruginosa | cfu/g | absent in 1g |
Staphylococcus aureus | cfu/g | absent in 1g |
Salmonella | cfu/g | absent in 25g |
Bacterial endotoxine | IU/g | max. 2,5 |
Shelf Life/Retest Date: Boric Acid Powder can be kept for at least 3 years if stored under recommended conditions.
Storage/Shipping Conditions:
Pack Sizes: 3 Kg