Boric Acid Powder
EP, USP (Tested for Endotoxin & Microbes)
CAS #:
10043-35-3
Molecular Formula:
BH3O3
Synonym:
Hydrogen Borate, Boracic Acid, Orthoboric Acid
Molecular Weight:
61.83 g/mol
Overview
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:
- Store under lock and key and with access restricted to technical experts or their assistants only.
- Keep container sealed.
- Recommended storage temperature: +15°C - +25°C
- Storage class: 6.1 D
Pack Sizes: 3 Kg
