Phosphoric Acid 50% Technical Grade

Name: Quick Facts: Phosphoric Acid 50% Technical Grade
Creator: Alliance Chemical
License: https://alliancechemical.com/policies/terms-of-service

Product quick facts

CAS 7664-38-2H3PO4UN1805

Phosphoric Acid 50% Technical Grade (CAS 7664-38-2) is a 50% Technical Grade liquid with molecular formula H3PO4 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 container sizes from 1 Quart to 330 Gallon (16 pack options) with 1-2 business day shipping from Taylor, TX on in-stock orders, plus SDS and lot-specific Certificate of Analysis.

Pack sizes 7 container sizes (1 Quart to 330 Gallon) · 16 pack options
Purity / spec 50% Technical Grade
Lead time In-stock orders placed by Mon-Thu 2 PM CT / Fri 12 PM CT typically ship within 1-2 business days.
Regional availability View state-by-state shipping pages

Request Bulk Quote (512) 365-6838

Quick Answer

What is Phosphoric Acid 50% Technical Grade used for, and what should buyers verify before ordering?

Phosphoric Acid 50% Technical Grade is supplied at 50% in Technical Grade with UN1805, DOT Class 8 . Buyers should confirm pack size, grade, SDS, COA needs, and freight requirements before purchase.

Assay: 50%
Grade: Technical Grade
UN number: UN1805
DOT class: 8

Technical Documents

Live, always-current documents. Need the Certificate of Analysis for your lot? Just ask, no charge.

Who Buys This

Metal finishing shops
Industrial maintenance teams
Chemical blending operations
Research and testing labs

Purity / Grade Guide

Technical Grade for industrial use
Suitable for process applications
Common in cleaning formulations
SDS included; COA on request, no charge

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 50% Technical Grade is a pre-diluted aqueous solution of phosphoric acid (H3PO4) prepared with high-purity deionized water. This 50% concentration provides a convenient, ready-to-use form that eliminates the need for on-site dilution of concentrated stock. Appearance: Clear, 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 50% 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: 50% (w/w)
Grade: Technical
Specific Gravity (20°C): 1.329
Boiling Point: 158°C (85%)
Flash Point: N/A
Appearance: Clear, 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.

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.

Specifications

CAS Number	7664-38-2
Formula	H3PO4
Molecular Weight	97.995
Grade	Technical
Form	Liquid
Percentage	50
Appearance	Clear, viscous liquid
Solubility	Fully miscible with water
Boiling Point	158°C (85%)
Melting Point	21°C (pure)

Safety & Handling

DOT Proper Shipping Name	Phosphoric acid solution
UN Number	UN1805
DOT Hazard Class	8
Packing Group	III
GHS Signal Word	Danger
GHS Pictograms	GHS05 (Corrosion)

H314 Causes severe skin burns and eye damage
H290 May be corrosive to metals

Documentation: Safety Data Sheet (SDS) · Technical Data Sheet (TDS)

Related reading: Phosphoric acid: all grades and concentrations

Frequently Asked Questions About Phosphoric Acid 50% Technical Grade

What is Phosphoric Acid 50% Technical Grade and what is its chemical formula?

Phosphoric Acid 50% Technical Grade is listed under CAS 7664-38-2 (PubChem reference search). The catalog formula is H3PO4. The listed molecular weight is 97.995 g/mol. For solutions and blends, identity values may describe a constituent; consult the product SDS for composition.

What are the physical properties of Phosphoric Acid 50% Technical Grade?

Catalog reference information for Phosphoric Acid 50% Technical Grade: form: Liquid; appearance: Clear, viscous liquid; melting point: 21°C (pure); boiling point: 158°C (85%); specific gravity: 1.329; solubility: Fully miscible with water; reference values may describe a pure substance rather than the supplied concentration or blend. Confirm applicable conditions and specifications in the product documents; these values are not batch test results.

What grade and purity of Phosphoric Acid 50% Technical Grade does Alliance Chemical offer?

Alliance Chemical lists Phosphoric Acid 50% Technical Grade in Technical Grade with a concentration or assay of 50%. Check the product specification for the measurement basis and acceptance limits. A grade label alone does not establish certification or suitability for a regulated application. For batch results, request a COA using the product name and lot number.

What are common industrial applications of Phosphoric Acid 50% Technical Grade?

Catalog industry categories for Phosphoric Acid 50% Technical Grade include Food & Agriculture. To evaluate it for your process, compare the listed grade, concentration and product specifications with your requirements. Contact Alliance Chemical to confirm any application-specific documentation or certification before ordering.

What are the hazards of Phosphoric Acid 50% Technical Grade and where do I find handling guidance?

Per its GHS classification (SDS Section 2), Phosphoric Acid 50% 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 50% Technical Grade?

The catalog transport entry lists UN1805, hazard class 8, packing group III. Consult SDS Section 14 and confirm the requirements for your selected pack size and shipping destination with Alliance Chemical.

How must Phosphoric Acid 50% Technical Grade waste be disposed?

Consult SDS Section 13 for disposal information for Phosphoric Acid 50% Technical Grade. Disposal requirements depend on the resulting waste, contamination and location. Have your site's responsible waste professional determine the appropriate waste classification and disposal method. View the SDS.

Does Alliance Chemical provide an SDS and COA for Phosphoric Acid 50% Technical Grade?

Search the document library for Phosphoric Acid 50% Technical Grade. The SDS is also available here. A sample COA describes specifications and does not establish the results for your shipment. To request a lot-specific COA or confirm document availability, contact Alliance Chemical with the product name and lot number.