Phosphoric Acid 45% Technical Grade

Name: Quick Facts: Phosphoric Acid 45% Technical Grade
Creator: Alliance Chemical
License: https://alliancechemical.com/policies/terms-of-service

Product quick facts

CAS 7664-38-2H3O4PUN1805

Phosphoric Acid 45% Technical Grade (CAS 7664-38-2) is a 45% Technical-grade liquid with molecular formula H3O4P and a molecular weight of 97.995 g/mol, for industrial and manufacturing applications. It ships as DOT Hazard Class 8. Alliance Chemical supplies this product in 7 sizes from 1 Quart to 330 Gallon with 1-2 business day shipping from Taylor, TX on in-stock orders, plus SDS and lot-specific Certificate of Analysis.

Pack sizes 7 sizes (1 Quart to 330 Gallon)
Purity / spec 45% Technical
Lead time In-stock orders placed by Mon-Thu 1 PM CT / Fri 12 PM CT typically ship within 1-2 business days.
SDS / COA Download SDS; lot-specific COA available on request.
Regional availability View state-by-state shipping pages

Request Bulk Quote (512) 365-6838

Quick Answer

What is Phosphoric Acid 45% Technical Grade used for, and what should buyers verify before ordering?

Phosphoric Acid 45% Technical Grade is supplied at 45% in Technical grade with UN UN1805, DOT Class 8 . Buyers should confirm pack size, grade, SDS, COA needs, and freight requirements before purchase.

Assay: 45%
Grade: Technical
UN number: UN UN1805
DOT class: 8
Documents: SDS and lot-specific COA support
Shipping: UPS for small packs; LTL/FTL for pails, drums, totes, and bulk orders

Commercial Fulfillment Snapshot

Buy Phosphoric Acid 45% Technical Grade with faster decisions and fewer back-and-forth emails.

In-stock orders placed before 1:00 PM CT (Mon-Thu) and before 12:00 PM CT (Fri) typically ship within 1-2 business days. Order online 24/7.

Get Bulk Quote → Call (512) 365-6838

Technical Documents

SDS EN SDS FR SDS ES SDS JA TDS COA

Live, always-current docs · lot-specific COA issued per shipment batch.

Who Buys This

Metal finishing shops
Water treatment operators
Manufacturing maintenance teams
Industrial lab buyers

Purity / Grade Guide

Technical Grade for industrial use
Suitable for process applications
COA included every order
SDS available with purchase

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

Small Packs: UPS Ground nationwide for pints, quarts, and gallons.

LTL / FTL: ABF, SEFL, Saia, XPO, and partner carriers for pails, drums, totes, and full truckloads.

Support: Email or call for freight options, hazardous-material routing, and lead-time confirmation.

Description
Product Documents
Chemical Profile

Product Overview

Phosphoric Acid 45% Technical Grade is a pre-diluted aqueous solution of phosphoric acid (H3PO4) prepared with high-purity deionized water. This 45% concentration provides a convenient, ready-to-use form that eliminates the need for on-site dilution of concentrated stock. Appearance: Clear, slightly viscous liquid. This Technical Grade product is manufactured for industrial and commercial applications where high purity is required for consistent performance.

Supplied by Alliance Chemical in sizes ranging from 1 quart to 330-gallon IBC totes, this solution is ideal for operations requiring consistent 45% strength with minimal handling risk compared to higher concentrations.

Key Properties

Chemical Name: Phosphoric Acid
Synonyms: Orthophosphoric Acid, H3PO4
Chemical Formula: H3PO4
CAS Number: 7664-38-2
Molecular Weight: 98 g/mol
Concentration: 45% (w/w)
Grade: Technical
Specific Gravity (20°C): 1.289
Boiling Point: 158°C (85%)
Flash Point: N/A
Appearance: Clear, slightly viscous liquid
Solubility: Fully miscible with water

Common Applications

Metal Treatment & Rust Removal: Converts iron oxide to iron phosphate, providing corrosion-resistant surface preparation for coatings.
Food & Beverage Processing: Acidulant and pH regulator used in carbonated beverages, dairy processing, and sugar refining.
Water Treatment: Controls scale formation and adjusts pH in cooling towers, boilers, and municipal water systems.
Fertilizer Production: Primary feedstock for manufacturing phosphate fertilizers and animal feed supplements.
Laboratory & Analytical: Used as a reagent in chromatography, titration, and buffer preparation.

Safety Precautions

Phosphoric Acid solutions are corrosive and can cause severe burns. Handle with appropriate PPE, including chemical-resistant gloves, splash goggles, and protective clothing. Use in well-ventilated areas to minimize vapor inhalation. Store in a cool, dry place in HDPE or glass containers away from bases and metals.

PPE Requirements: Wear acid-resistant gloves, safety goggles, and face shield when handling concentrated solutions. In case of skin contact, wash immediately with plenty of water. In case of eye contact, rinse continuously for at least 15 minutes. Refer to the Safety Data Sheet (SDS) for full emergency response procedures.

Shipping: UN 1805, Phosphoric acid solution, Class 8, PG III.

Benefits

Pre-Diluted Convenience: Ready-to-use concentration eliminates on-site dilution errors and reduces handling risk.
Consistent Purity: Manufactured to strict quality standards for reliable performance in critical applications.
Versatile Sizing: Available from quart bottles to IBC totes to support any scale of operation.

Related Products

Property	Value
Molecular Weight	97.995
Formula	H3O4P
Assay	45%
Grade	Technical
Form	Liquid
Solubility	Fully miscible with water
Appearance	Clear, slightly viscous liquid
Melting Point	21°C (pure)
Boiling Point	158°C (85%)
Specific Gravity	1.289
Industry	Food & Agriculture, Industrial & Manufacturing

Frequently Asked Questions About Phosphoric Acid 45% Technical Grade

What is Phosphoric Acid 45% Technical Grade and what is its chemical formula?

Phosphoric Acid 45% Technical Grade is a chemical compound with the molecular formula H3O4P, registered under CAS Number 7664-38-2 by the Chemical Abstracts Service (PubChem), with a molecular weight of 97.995 g/mol. Alliance Chemical supplies Phosphoric Acid 45% Technical Grade in Technical grade for laboratory, industrial, and commercial applications.

What are the physical properties of Phosphoric Acid 45% Technical Grade?

As supplied by Alliance Chemical, Phosphoric Acid 45% Technical Grade has a clear, slightly viscous liquid appearance. It has a melting point of 21°C (pure), a boiling point of 158°C (85%), a flash point of N/A. The specific gravity is 1.289 relative to water. Solubility: Fully miscible with water.

What grade and purity of Phosphoric Acid 45% Technical Grade does Alliance Chemical offer?

Alliance Chemical offers Phosphoric Acid 45% Technical Grade in Technical grade with a purity assay of 45%. A lot-specific Certificate of Analysis (COA) is available for every shipment, and each product ships with a 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 45% Technical Grade?

Phosphoric Acid 45% Technical Grade serves a wide range of sectors, including Food & Agriculture, and Industrial & Manufacturing.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.

What are the hazards of Phosphoric Acid 45% Technical Grade and where do I find handling guidance?

Per its GHS classification (SDS Section 2), Phosphoric Acid 45% Technical Grade carries the signal word Danger and the following hazard statements: H314 CAUSES SEVERE SKIN BURNS AND EYE DAMAGE; H290 MAY BE CORROSIVE TO METALS. Product-specific first aid, fire-fighting, spill response, handling, storage, exposure controls/PPE, and disposal guidance are in SDS Sections 4-8 and 13 — always consult the SDS before use. Download the SDS.

What is the DOT shipping classification for Phosphoric Acid 45% Technical Grade?

DOT Classification per 49 CFR 172.101:UN1805, Hazard Class 8, Packing Group III. Regulated shipments include hazmat shipping papers (49 CFR 172.200), UN specification packaging (49 CFR 173), and hazmat labels (172.400). Alliance Chemical ships all orders in DOT-compliant packaging with proper documentation.

How must Phosphoric Acid 45% Technical Grade waste be disposed?

Disposal per RCRA (40 CFR 261-265): the waste characterization under 40 CFR 261 is the generator's responsibility — see SDS Section 13 for product-specific guidance. Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use an 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.

Does Alliance Chemical provide an SDS and COA for Phosphoric Acid 45% Technical Grade?

Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Phosphoric Acid 45% Technical 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.