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Who Buys This
- Water treatment facilities
- Fertilizer manufacturers
- Food processing companies
- Pharmaceutical labs
- Industrial cleaning services
Grade Guide
- ACS grade high purity
- Laboratory & analytical use
- Meets stringent quality standards
- Minimal impurities for precision work
Pack Sizes
- 1 Quart: lab & small jobs
- 1 Gallon: shop & maintenance
- 5 Gallon: production & regular use
- 15 Gallon: mid-volume operations
- 55 Gallon: bulk drum
- 275 Gallon: high-volume tote
- 330 Gallon: max-volume tote
Docs Included
- UN 1805 Class 8 packaging
- SDS included with order
- COA verifies specifications
- Proper hazmat documentation
Product Overview
Phosphoric Acid 85% ACS Grade (Orthophosphoric Acid) is a clear, colorless liquid formulation of H3PO4 designed for critical applications requiring strict purity limits. As an ACS Reagent Grade chemical, this product aligns with authoritative monographs, ensuring low trace metal impurities and consistent assay levels between 85.0% and 85.9%. It is the standard choice for laboratory analysis, pharmaceutical synthesis intermediates, and high-precision industrial processing.
This high-purity acid serves as a vital component in pH adjustment, metal passivation, and chemical manufacturing. Unlike technical grades, ACS Grade Phosphoric Acid ensures reproducible results by minimizing contaminants like iron, heavy metals, and chloride. It is compatible with HDPE and glass storage and is widely used for rust removal, surface preparation, and as a chemical reagent. We supply this product in a wide range of pack sizes, from lab-scale quantities to bulk totes, ensuring scalability for your operation.
Key Properties
- Product Name: Phosphoric Acid 85% ACS Grade
- Synonyms: Orthophosphoric Acid, H3PO4
- CAS Number: 7664-38-2
- Appearance: Clear, colorless liquid
- Assay: 85.0% – 85.9% (Titration)
- Grade: ACS Reagent Grade
- Formula: H3PO4
- Molecular Weight: 98.00 g/mol
- Density (25°C): 1.685 g/mL
- Boiling Point: 158 °C
- Heavy Metals (as Pb): ≤0.5 ppm
- Iron (Fe): ≤0.5 ppm
- Chloride: ≤100 ppm
Common Applications
- Laboratory Reagent: Used as a high-purity analytical reagent in chromatography and titration workflows.
- pH Adjustment: Precise pH control in water treatment and industrial chemical processing.
- Metal Finishing: Highly effective for rust removal, passivation of stainless steel, and phosphate conversion coating.
- Chemical Synthesis: Acts as a catalyst or reagent in the production of phosphates, activated carbon, and specialty chemicals.
- Equipment Cleaning: Removes mineral deposits and scale from industrial machinery and heat exchangers.
Safety & Handling
Phosphoric Acid 85% is corrosive and must be handled with appropriate personal protective equipment (PPE), including chemical-resistant gloves, splash goggles, and face shields. It is classified as Skin Corr. 1B and Metal Corr. 1. Ensure adequate ventilation during use to avoid inhalation of mists. Store in a cool, dry area in corrosion-resistant containers (HDPE or glass) away from alkalis and reactive metals. Refer to the Safety Data Sheet (SDS) for detailed emergency and disposal information.
Related Products
| Property | Value |
|---|---|
| Molecular Weight | 98 g/mol |
| Formula | H3PO4 |
| Assay | 85% |
| Grade | ACS |
| Flash Point | Non-flammable |
| Form | Liquid |
| Solubility | Soluble in water, alcohols, and polar organic solvents |
| Appearance | Clear, colorless liquid |
| Melting Point | 42 °C |
| Boiling Point | 158 °C |
| Specific Gravity | 1.69 |
| Industry | Industrial, Research, Wastewater |
Frequently Asked Questions About Phosphoric Acid 85% ACS Grade
What is Phosphoric Acid 85% ACS Grade and what is its chemical formula?
Phosphoric Acid 85% ACS Grade is a chemical compound with the molecular formula H3PO4, registered under CAS Number 7664-38-2 by the Chemical Abstracts Service (PubChem), with a molecular weight of 98 g/mol. Alliance Chemical supplies Phosphoric Acid 85% ACS Grade in ACS grade for laboratory, industrial, and commercial applications.
What are the physical properties of Phosphoric Acid 85% ACS Grade?
According to the NIOSH Pocket Guide to Chemical Hazards, Phosphoric Acid 85% ACS Grade is supplied as a clear, colorless liquid. It has a melting point of 42°C, a boiling point of 158°C, a flash point of Non-flammable. The specific gravity is 1.69 relative to water. Solubility: Soluble in water, alcohols, and polar organic solvents.
What grade and purity of Phosphoric Acid 85% ACS Grade does Alliance Chemical offer?
Alliance Chemical offers Phosphoric Acid 85% ACS Grade in ACS grade with a purity assay of 85%. Every lot ships with a Certificate of Analysis (COA) and Safety Data Sheet (SDS) prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and GHS Revision 7. Download SDS.
What are common industrial applications of Phosphoric Acid 85% ACS Grade?
Phosphoric Acid 85% ACS Grade serves a wide range of sectors, including Industrial, Research, and Wastewater.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.
What PPE is required when handling Phosphoric Acid 85% ACS Grade?
OSHA-mandated PPE per 29 CFR 1910.132-138:Chemical-resistant gloves (20+ mil neoprene or PVC), full face shield over safety goggles (ANSI Z87.1), acid-resistant apron or chemical suit, closed-toe chemical-resistant footwear. Respiratory protection (organic vapor cartridge) required in areas exceeding PEL/TLV per 29 CFR 1910.134. Emergency eyewash station and safety shower must be accessible within 10 seconds per ANSI Z358.1. Consult the SDS available from Alliance Chemical for complete PPE requirements.
What are the storage requirements for Phosphoric Acid 85% ACS Grade?
Store perOSHA 29 CFR 1910.106: Approved flammable storage cabinet, maximum 60 gallons per cabinet, grounding/bonding required. Temperature range:15-25°C. Segregate from:bases, reactive metals, organic materials. Maximum storage:2-3 years unopened.
What is the emergency spill procedure for Phosphoric Acid 85% ACS Grade?
Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 100 feet. (2) Eliminate ignition sources if flammable. (3) Don PPE per SDS Section 8. (4) Stop leak if safe; use emergency shutoffs. (5) Contain with non-combustible absorbent materials, dike with sand/earth. (6)Carefully neutralize with sodium bicarbonate (5-10% solution), monitor exothermic reaction. (7) Collect in DOT-approved containers, label as hazardous waste. Check 40 CFR 302.4 for Reportable Quantity. Emergency: Chemtel 1-800-255-3924 (24/7). Non-emergency: Alliance Chemical 512-365-6838.
What is the DOT shipping classification for Phosphoric Acid 85% ACS Grade?
DOT Classification per 49 CFR 172.101:See SDS Section 14 for specific UN number, Hazard Class8 (Corrosive), Packing GroupII/III. Requires: Hazmat shipping papers (49 CFR 172.200), UN specification packaging (49 CFR 173), hazmat labels (172.400). Alliance Chemical ships all orders in DOT-compliant packaging with proper documentation.
How must Phosphoric Acid 85% ACS Grade waste be disposed?
Disposal per RCRA (40 CFR 261-265):Characteristic waste D002 (Corrosive, pH ≤2 or ≥12.5). Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use EPA-permitted Treatment, Storage, Disposal Facility (TSDF). Never discharge to sewer without POTW written approval (40 CFR 403). Container disposal: Triple rinse (40 CFR 261.7), offer for reconditioning/recycling. State regulations may be more stringent — check with your local environmental agency. Consult the Alliance Chemical SDS for product-specific disposal guidance.
Does Alliance Chemical provide an SDS and COA for Phosphoric Acid 85% ACS Grade?
Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Phosphoric Acid 85% ACS Grade. The SDS is prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and the Globally Harmonized System (GHS) Revision 7, covering all 16 required sections including hazard identification, first aid measures, firefighting measures, handling and storage, exposure controls, and regulatory information. The SDS is available for download directly from this product page. COAs are available upon request by contacting Alliance Chemical at 512-365-6838.
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