Boric acid
Boric acid (CAS 10043-35-3), molecular formula H3BO3, is a high-purity chemical supplied by Tech Serve Solutions for acids & bases applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- Boracic Acid, Hydrogen Borate, Orthoboric Acid; Boracic acid; Hydrogen orthoborate; Trihydroxyborane; Borsäure (German); ácido bórico (Spanish); Acide borique (French);
- Synonyms
- Boracic Acid, Hydrogen Borate, Orthoboric AcidBoracic acidHydrogen orthoborateTrihydroxyboraneBorsäure (German)ácido bórico (Spanish)Acide borique (French)

| Molecular weight | 61.83 |
|---|---|
| Linear formula | H3BO3 |
| Assay | ≥99.8% |
| Grade | ACS reagent |
| Solubility | H2O: soluble1 M, clear, colorless (hot) |
| pH | 3.6-4.0 (20 °C, 4%) |
| Vapour pressure | 2.6 mmHg (20 °C) |
| Melting point | 160 °C (dec.)(lit.) |
| Loss on drying | ≤0.5% loss on drying, 20 °C (HV) |
| Impurities tested | ≤0.005% insoluble in methanol≤0.05% with methanol-HCl non-volat. matter |
| Application | The main uses of boric acid is to make borate salts such as borax and other boron compounds. Boric acid is also used in heat resistant glass, in fireproofing fabrics, in electroplating baths, in leather manufacturing, porcelain enamels and in hardening steels. Boric acid has antiseptic and antiviral activity. Aqueous solutions have been used as mouth-washes, eye-drops, skin lotions and cosmetics. Boric acid and its salts are components of many commercial insecticides and wood preservatives. |

Hazard statements
- H360FD
Precautionary statements
- P201Obtain special instructions before use
- P308IF exposed or concerned
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | T |
| Risk statements (R) | 60-61 |
| Safety statements (S) | 53-45 |
| Cation traces | As: ≤0.5 mg/kgCa: ≤20 mg/kgCd: ≤5 mg/kgCu: ≤5 mg/kgFe: ≤1 mg/kgMg: ≤5 mg/kgPb: ≤5 mg/kgZn: ≤5 mg/kg |
| Anion traces | chloride (Cl-): ≤3 mg/kgphosphate (PO43-): ≤5 mg/kgsulfate (SO42-): ≤5 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Uv Absorption | λ: 260 nm Amax: 0.015λ: 280 nm Amax: 0.010 |
|---|---|
| Description | white cystals |
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Boric acid?
+
Boric acid (CAS 10043-35-3), molecular formula H3BO3, is a high-purity chemical supplied by Tech Serve Solutions for acids & bases applications, to USP, BP and EP standards.
What grades of Boric acid does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Boric acid in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Boric acid?
+
Boric acid has CAS number 10043-35-3 and molecular formula H3BO3. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Boric acid?
+
Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
+
Yes. Every batch of Boric acid ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Boric acid be stored?
+
Store Boric acid in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Boric acid used for?
+
Boric acid is used in acids & bases applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Boric acid?
+
Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
▶ Related products

5-Sulfosalicylic acid dihydrate
HO3SC6H3-2-(OH)CO2H 2H2O
Acids & Bases
Calcium hydroxide
Ca(OH)2
Acids & Bases
Acetic acid-12C2
12CH312CO2H
Acids & Bases
Acetic acid-13C2
13CH313CO2H
Acids & Bases
Acetic acid-13C2,d4
Acids & Bases

Acetic acid-17O2
CH3C17O2H
Acids & Bases
Acetic acid-18O2
CH3C18O2H
Acids & Bases
Acetic acid-2,2,2-d3
2-d3
Acids & Bases


