Description

Boric Acid CAS NO 10043-35-3 is a weak, monobasic Lewis acid of boron, widely recognized for its antiseptic, insecticidal, and flame-retardant properties. Its versatility and effectiveness make it a critical raw material across numerous industrial and manufacturing sectors. This compound is essential for producers in the glass, ceramics, agriculture, wood treatment, and pharmaceutical industries seeking a reliable, high-purity chemical intermediate.

Application

• Glass & Ceramics Manufacturing: As a fluxing agent to reduce melting temperature and improve thermal shock resistance and chemical durability in borosilicate glass, fiberglass, and ceramic glazes.
• Flame Retardants: Incorporated into cellulose insulation, textiles, and plastics to suppress combustion and inhibit flame spread.
• Agriculture & Pest Control: Used as an insecticide for cockroach and ant control, a wood preservative against fungi and insects, and a micronutrient fertilizer.
• Pharmaceutical & Personal Care: Serves as a mild antiseptic in eye washes, wound disinfectants, and as a pH buffer in topical preparations.
• Metalworking & Metallurgy: Acts as a welding flux, a corrosion inhibitor in coolant systems, and a neutron absorber in nuclear applications.
• Laboratory & Chemical Synthesis: Employed as a buffer solution component and a precursor for producing other boron compounds.

Basic Information

Product Name	Boric Acid
CAS No.	10043-35-3
Molecular Formula	H3BO3 or B(OH)3
Molecular Weight	61.83 g/mol
Synonyms	Orthoboric Acid; Boracic Acid; Hydrogen Borate; Sassolite; Borofax; Trihydroxyborane; Acidum Boricum; Boric Acid (USP/BP/EP)
EINECS	233-139-2

Quality Control

Our Boric Acid is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We offer various grades, including Technical, NF/BP/USP, and FCC, to meet diverse industrial and regulatory requirements. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are provided with each shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Boric acid is hygroscopic (moisture-sensitive); ensure the storage environment has low humidity to prevent caking. Keep away from strong alkalis and fluorides.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (H3BO3)	≥ 99.5%
Solubility (in Water)	Clear, colorless solution
Loss on Drying	≤ 0.5%
Sulfate (SO4)	≤ 150 ppm
Chloride (Cl)	≤ 50 ppm
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.