Home › Chemicals › Boric Acid CAS 10043-35-3: Boric Acid (H3BO3) Identity CAS Number 10043-35-3 Molecular Formula H3BO3 IUPAC Name boric acid Molecular Weight 61.83 g/mol SMILES OB(O)OSynonyms boracic acid, orthoboric acid, sassolite, sodium borate precursor
2D Structure
Physical Properties Density 1.435 g/mL at 25°C Boiling Point 300.0°C Melting Point 170.9°C Flash Point None°C Vapor Pressure 0.0 kPa at 20°C Refractive Index nD = 1.338 Dielectric Constant ε = 37.0
Safety & GHS Classification Health Hazard
H360FD: May damage fertility. May damage the unborn child Storage: Store in cool, dry place. Low acute toxicity but reproductive hazard — avoid ingestion and inhalation. Keep away from food and drink. Use gloves and avoid skin contact with powder.
Material Compatibility Matrix Plastics Material Rating PTFE Excellent PVC Excellent PE Excellent PP Excellent PEEK Excellent PVDF Excellent
Rubbers Material Rating Viton Excellent NBR Excellent EPDM Excellent Silicone Excellent FKM Excellent
Metals Material Rating Stainless 316 Excellent Aluminum Excellent Copper Excellent Brass Excellent
Applications Antiseptic and insecticide Fiberglass manufacturing Boron neutron capture therapy (BNCT) Flux for soldering and welding Wood preservative Pharmaceutical buffer Nuclear reactor neutron absorber Eye wash solution (dilute) External References: PubChem
Print SDS Sheet
Related Chemicals