DIFLUOROPHOSPHORIC ACID Chemical Properties

Melting point:

-75 °C

Boiling point:

115,9°C

Density 

1,583 g/cm³

solubility 

reacts with H2O

form 

liquid

pka

-0.11±0.50(Predicted)

color 

yellow

Specific Gravity

1.583 (25℃)

CAS DataBase Reference

13779-41-4(CAS DataBase Reference)

EPA Substance Registry System

Phosphorodifluoridic acid (13779-41-4)

Safety Information

Hazard Codes 

C

Risk Statements 

20/21/22-35

Safety Statements 

26-27-36/37/39-45

RIDADR 

3264

Hazard Note 

Corrosive

HazardClass 

8

PackingGroup 

II

DIFLUOROPHOSPHORIC ACID Usage And Synthesis

Chemical Properties

mobile, colorless liquid; fumes in air [KIR78]

Uses

Difluorophosphoric Acid can be used as a non-aqueous electrolyte secondary batter.

General Description

A mobile colorless strongly fuming liquid. Density 1.583 g / cm3. Corrosive to glass, fabric, metals and tissue.

Air & Water Reactions

Fumes in air. Reacts vigorously with water to form corrosive and toxic hydrofluoric acid and heat.

Reactivity Profile

DIFLUOROPHOSPHORIC ACID reacts exothermically with chemical bases (examples: amines, amides, and inorganic hydroxides). These reactions can generate dangerously large amounts of heat in small spaces. Reacts vigorously with water to form corrosive and toxic hydrofluoric acid and heat. Reacts with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain alkenes. Reacts with cyanide compounds to release gaseous hydrogen cyanide. Generates flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents. Additional gas-generating reactions occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates. May catalyze (increase the rate of) chemical reactions.

Health Hazard

Inhalation causes severe irritation of upper respiratory tract. Contact with liquid causes severe irritation of eyes and skin. Ingestion causes severe burns of mouth and stomach.

Fire Hazard

Special Hazards of Combustion Products: Irritating and toxic fumes of hydrogen fluoride and phosphoric acid may be formed in fires.

Safety Profile

Toxic and corrosive material. Very irritating to the skin, eyes, and mucous membranes. When heated to decomposition it emits very toxic fumes of POx and F-. Used as a catalyst. See also PHOSPHORODIFLUORIDIC ACID, anhydrous.

DIFLUOROPHOSPHORIC ACID(13779-41-4)Related Product Information

• DIFLUOROPHOSPHORIC ACID HEMIHYDRATE
• DIFLUOROPHOSPHORIC ACID, HPO2F2
• AURORA KA-1627
• PYROPHOSPHORYL TETRAFLUORIDE
• DIFLUOROPHOSPHORIC ACID