Phosphoric Acid 70% at a Glance
Phosphoric Acid 70% (CAS 7664-38-2) is a colorless aqueous acid for metal cleaning, phosphating and phosphate manufacture. ZXCHEM supplies H3PO4 ≥70% with controlled fluoride, chloride, arsenic, lead and sulfate. Plastic drums, lined steel drums and bulk-tank supply support industrial processing, with downloadable TDS, reference SDS and free samples for testing.
Request a free sample for testing.
Standard lead time is approximately 14 days from order confirmation.
Phosphoric Acid 70% Specifications
Supply limits describe the aqueous phosphoric acid grade. H3PO3 is the basis for easily oxidized impurity control, not the supplied acid identity.
Commercial Information
Storage & Shipping
Storage Conditions
Store tightly closed in compatible acid-resistant containers in a cool, ventilated area with secondary containment. Segregate alkalis, reactive metals and incompatible materials; protect closures from damage.
Packaging Integrity
Inspect acid-resistant drums, liners and transfer connections before unloading. Secure containers upright, keep closures clean and use secondary containment to capture leaks.
Packaging
20 L / 200 L plastic drums / lined steel drums / bulk tank
Handling & Protection
Use controlled liquid transfer with suitable extraction where acid mist can form. Wear acid-resistant gloves, protective clothing and eye/face protection. For dilution, add acid slowly to water with cooling; prevent splashes and provide eyewash and emergency washing facilities.
What Is Phosphoric Acid 70%?
Phosphoric acid is an inorganic phosphorus acid with solute formula H3PO4 and molecular weight 97.99 g/mol. This product is an aqueous liquid with minimum H3PO4 content 70%; it is distinct from phosphorous acid, H3PO3.
The supply specification limits fluoride to ≤0.001%, chloride ≤0.0005%, arsenic ≤0.0001%, heavy metals as lead ≤0.001% and sulfate ≤0.003%. Easily oxidized matter is controlled as H3PO3 at ≤0.012%. These values support grade evaluation for industrial processing.
Phosphoric acid can be used in compatible metal-cleaning and phosphating systems and as a feedstock for selected phosphate chemicals. Evaluate acid concentration, impurities, corrosion behavior and the full process before specifying a treatment. This industrial specification does not establish food or pharmaceutical suitability.
The matched 70% aqueous reference is transported as UN 1805, Class 8, packing group III. Corrosive-liquid containment, splash protection and controlled dilution are essential. Packaging materials must be compatible with concentrated phosphoric acid and the intended storage conditions.
Browse related oil and gas chemicals in our catalog.
Phosphoric Acid 70% Applications
Metal cleaning and phosphating
Acid component for compatible rust-removal and phosphating systems. Determine treatment concentration, temperature and exposure time by substrate and complete process evaluation.
Phosphate chemical manufacture
Phosphorus-acid feedstock for selected phosphate salts and intermediates. Match impurity limits and reaction conditions to downstream product requirements.
Industrial cleaner formulation
Acid component for selected industrial cleaning formulations. Assess surfactant compatibility, stability, material corrosion and appropriate exposure controls.
Why Source Phosphoric Acid 70% from ZXCHEM
One-stop Chemical Sourcing
Source several chemical raw materials through one ZXCHEM contact. We coordinate product selection, quotations and suitable consolidated shipments so you can plan the order with one team.
Dedicated R&Q Laboratory
Discuss specifications, sample results and application questions with our technical team. Our dedicated R&Q laboratory supports product testing and helps clarify material selection.
Experienced Chemical Logistics
ZXCHEM has more than 30 years of experience in dangerous-goods transportation. We coordinate suitable shipments through logistics companies in which we hold equity interests in Qingdao, Shanghai, Guangzhou and Tianjin.
Dedicated Purchasing Support
Your account manager follows the order from quotation and contract signing through shipment and after-sales support. One contact coordinates technical documents, commercial details and delivery updates.
Phosphoric Acid 70% FAQ
Which Phosphoric Acid 70% grade should I choose?
Compare H3PO4 ≥70% against your process requirements. Check the TDS for assay and impurity limits, then test a sample for compatibility and performance in your process.
Can I request a Phosphoric Acid 70% sample for testing?
Request a free sample for testing. Tell us the intended Orthophosphoric acid application, preferred grade and the tests you plan to perform, so that we can arrange a suitable evaluation sample and technical information.
How is Phosphoric Acid 70% packed and shipped?
Standard packing is 20 L / 200 L plastic drums / lined steel drums / bulk tank. The usual MOQ is 1,000 kg, with a lead time of approximately 14 days from order confirmation. The reference bulk transport classification is Class 8 — Corrosive.
Which documents are available for Phosphoric Acid 70%?
The TDS covers supply specifications; the reference SDS covers safety and transport. Both can be downloaded on this page. A batch COA can be provided with supply. Request documents for the grade and physical form you are ordering.
Related Products
Request a Phosphoric Acid 70% Quotation
Tell us the required grade, quantity, destination port and documents. We reply within 24 hours.
We use your details to respond to this enquiry. You can also contact sales@zxchem.com.cn.