Is Difluorophosphoric Acid supplied only as an anhydrous acid?

No commercial form should be assumed from the CAS number alone. Confirm whether the offer is anhydrous Difluorophosphoric Acid, a defined solution or a hydrated material, and record the concentration basis, solvent or water content and analytical method on the specification.

What must be specified when sourcing Difluorophosphoric Acid?

Define assay or concentration, water, free fluoride or HF-related content, phosphate species and other process-relevant impurities. Also confirm compatible fluorine-service packaging, closure, quantity, destination, transport classification and unloading controls; the material reacts with water and requires the current SDS and specialist handling review.

Difluorophosphoric Acid CAS 13779-41-4

Difluorophosphoric Acid , CAS 13779-41-4 , is phosphorodifluoridic acid with formula HPO2F2 and molecular weight 101.98 g/mol. The previous chlorine-containing formula and physical profile did not match this product and have been removed. Procurement must establish whether anhydrous acid, a defined solution or another commercial form is offered, then specify concentration, water, fluoride- and phosphate-related impurities, compatible packaging and specialist transport requirements.

CAS: 13779-41-4
Synonyms: Difluorophosphoric acid, Phosphorodifluoridic acid, Difluorophosphinic acid, Fluophosphoric acid
Molecular Formula: HPO₂F₂
Grade: Confirm the offered form and concentration, assay basis, water, fluoride-, phosphate- and hydrolysis-related impurities, compatible materials, storage controls and handling requirements against the current COA and SDS.
Package: State offered form, concentration, quantity and destination; confirm documented compatibility for the container, closure and transfer materials, plus fill, headspace, temperature and dangerous-goods requirements against the current SDS.

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Product Description

1 Identity and specification

2 Quality controls for purchasing

3 Applications and grade selection

4 Storage and handling

5 Documentation and quotation details

Identity and specification

Item	Verified purchasing information
Product	Difluorophosphoric Acid; phosphorodifluoridic acid
CAS	13779-41-4
Formula / molecular weight	HPO2F2 / 101.98 g/mol
Identity correction	The molecule contains phosphorus and fluorine, not chlorine

Difluorophosphoric Acid is also called phosphorodifluoridic acid. CAS 13779-41-4 and formula HPO2F2 identify the parent substance. The shipped form may differ from the neat-component description, so concentration, solvent or water content and stabilization details must be documented.

Quality controls for purchasing

Confirm identity, supplied form, concentration basis, water and free-acid result using approved methods.
Define fluoride-, phosphate- and hydrolysis-related impurity limits appropriate to the intended chemistry.
Approve container material, closure, headspace, fill quantity and transport configuration through a documented compatibility review.

Applications and grade selection

Difluorophosphoric Acid is a specialty fluorophosphorus reagent for controlled research or synthesis. Suitability is reaction-specific and should be established with a small qualified sample, compatible equipment and a reviewed quench plan. No broad application claim should replace process hazard assessment.

Storage and handling

This corrosive, moisture-reactive material requires specialist controls. Use only the package, temperature and segregation conditions stated by the supplier. Do not assume ordinary glass, metal or general acid packaging is compatible. Trained personnel must follow the current SDS and site emergency plan.

Documentation and quotation details

State required form, concentration, water and impurity limits, quantity, destination, receiving capability and package restrictions. The supplier and buyer should review COA, SDS, transport classification, material compatibility and emergency information before accepting an order.

FAQ - Technical & Supply Chain

Q:
Is Difluorophosphoric Acid supplied only as an anhydrous acid?

A: No commercial form should be assumed from the CAS number alone. Confirm whether the offer is anhydrous Difluorophosphoric Acid, a defined solution or a hydrated material, and record the concentration basis, solvent or water content and analytical method on the specification.
Q:
What must be specified when sourcing Difluorophosphoric Acid?

A: Define assay or concentration, water, free fluoride or HF-related content, phosphate species and other process-relevant impurities. Also confirm compatible fluorine-service packaging, closure, quantity, destination, transport classification and unloading controls; the material reacts with water and requires the current SDS and specialist handling review.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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