Difluorophosphoric acid

HCID 61681

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Basic information

CAS: 13779-41-4
Standard SMILES: O=P(O)(F)F
InChIKey: DGTVXEHQMSJRPE-UHFFFAOYSA-N
Molecular formula: F2HO2P
Average molar mass: 101.977 g/mol
Monoisotopic mass: 101.96822234

Overview

Difluorophosphoric acid, anhydrous appears as a mobile colorless strongly fuming liquid. Density 1.583 g / cm3. Corrosive to glass, fabric, metals and tissue.

Names & identifiers

Preferred name: Difluorophosphoric acid
IUPAC: difluorophosphinic acid

Names & synonyms

DIFLUOROPHOSPHORIC ACID13779-41-4Phosphorodifluoridic acidFluophosphoric acid (F2(HO)PO)3QNA5YG39LDTXSID6065632Difluorophosphoric acid, anhydroussodium DFPRefChem:133603DTXCID8034451237-421-6difluorophosphinic acid

Show more names

MFCD08461583F2HO2PEINECS 237-421-6UN1768hydroxyphosphonoyl difluorideDifluorphosphorsaurephosphonodifluoridic acidUNII-3QNA5YG39L

Database identifiers

CAS: 13779-41-4
PubChem CID: 61681
DTXSID: DTXSID6065632
UNII: 3QNA5YG39L
EC Number: 237-421-6
Nikkaji: J95.956A

Properties

Computed structural propertiesFilling in

XLogP: 0
Topological polar surface area: 37.3 Å²
Hydrogen bond donors: 1
Hydrogen bond acceptors: 4
Rotatable bonds: 0
Heavy atoms: 5
Formal charge: 0
Complexity: 62

Experimental & physicochemical properties

Chemical ClassesCorrosives

SpringerMaterials PropertiesBoiling point

Density1.583 at 77 °F (USCG, 1999) - Denser than water; will sink

Boiling Point241 °F at 760 mmHg (USCG, 1999)

Melting Point-139 °F (USCG, 1999)

Physical DescriptionDifluorophosphoric acid, anhydrous appears as a mobile colorless strongly fuming liquid. Density 1.583 g / cm3. Corrosive to glass, fabric, metals and tissue.

Safety & regulation

GHS classification

GHS Classification · 4 items

Danger

H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 42 reports by companies from 3 notifications to the ECHA C&L Inventory.

Hazard information

Regulatory Information · 2 items

Chemical: Phosphorodifluoridic acid

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

DOT LabelCorrosive

Fire Hazards · 2 items

Special Hazards of Combustion Products: Irritating and toxic fumes of hydrogen fluoride and phosphoric acid may be formed in fires. (USCG, 1999)

· Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Health Hazards · 2 items

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. (USCG, 1999)

· TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury or death.

DOT ID and Guide1768 154

Reactive GroupAcids, Strong Non-oxidizing

Safety & protection

Fire FightingExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Accidental Release Measures · 2 items

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

First Aid · 2 items

Get medical attention as soon as possible following exposures to this compound.

General First Aid:

Exposure Control and Personal Protection· Wear positive pressure self-contained breathing apparatus (SCBA).

Nonfire Spill ResponseExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Isolation and Evacuation · 2 items

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Immediate precautionary measure