Boric Acid
Boracic Acid, Orthoboric Acid
- CAS
- 10043-35-3
- EC
- 233-139-2
- Sectors
- Building & Construction, Personal Care & Cosmetics, Agriculture
Boric Acid (CAS 10043-35-3) is an inorganic acid that occurs as a white, amorphous powder or colorless crystalline solid, is noted for mild antiseptic and buffering properties, and is used in glass and fiberglass manufacturing, ceramics, cosmetics and insecticides. It dissolves moderately in water and glycerol, forming weakly acidic solutions.
Typical Properties
| Molecular formula | BH3O3 |
|---|---|
| Molecular weight | 61.83 g/mol |
| Appearance | Boric acid is a white, amorphous powder or colorless, crystalline solid. |
| Form | working solution |
| Color | ≤10(APHA) |
| Odor | Odorless |
| Melting point | 171 °C (decomp) |
| Boiling point | 300 °C |
| Density | 1.435 g/cm³ @ Temp: 15 °C |
| Water solubility | 49.5 g/L (20 °C) |
| pH | 3.6-4.4 (25°C, saturated solution in H2O) |
| GHS signal word | Danger · Irritant / harmful, Health hazard |
| HS code | 28100090 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Boric Acid
Applications
Used in glass and fiberglass manufacturing, ceramics, and metallurgy. In cosmetics and pharmaceuticals, it functions as an antimicrobial and pH stabilizer. Also employed in lubricants, insecticides, and flame retardants.
Safety & Risks
Low toxicity but prolonged exposure should be avoided. Inhalation of dust may cause respiratory irritation. Handle with gloves and eye protection.
Packaging
Delivered in 25 kg PE-lined kraft bags or drums. Store in a cool, dry place away from strong bases and oxidizing agents.