Phenylphosphoric acid

Description

Phenylphosphoric acid · CAS 701-64-4 · C6H7O4P. UNII 75M88J863E. Density: 1.14 (Water = 1); Dissociation Constants: pKa = 9.99.

Identification

CAS Registry Number	701-64-4
PubChem CID	12793
Molecular formula	C6H7O4P
IUPAC name	phenyl dihydrogen phosphate
UNII (FDA)	75M88J863E

Computed Descriptors

Molecular Weight	174.09
XLogP3	0.3
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	2
Exact Mass	174.00819570
Monoisotopic Mass	174.00819570
Topological Polar Surface Area	66.8
Heavy Atom Count	11
Formal Charge	0

Physical & Chemical Properties

Density	1.14 (Water = 1)
Dissociation Constants	pKa = 9.99

Physical description & handling notes

• Liquid
• Clear, colorless liquid
• Characteristic odor
• In water, approximately 1%
• Stable under recommended storage conditions.
• Hazardous decomposition products formed under fire conditions - Carbon oxides, Oxides of phosphorus.

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	6.2% (5 / 80)

GHS Hazard Classification

GHS notification summary	6.2% (5 / 80)
Reported hazard statements	H314 (42.5%), H315 (51.2%), H318 (22.5%), H319 (51.2%)

Documented Uses

• Catalyst for resin manufacture; paint manufacture
• Surfactant (surface active agent)
• Non-confidential 2016 Chemical Data Reporting (CDR) information on the production and use of chemicals manufactured or imported into the United States. Chemical: Phosphoric acid, monophenyl ester:
• Table: National Aggregate Production Volume (pounds) [Table#8498]
• Paint and Coating Manufacturing
• Phosphoric acid, monophenyl ester: ACTIVE

Synonyms

Phenyl dihydrogen phosphate; Phenylphosphate; 701-64-4; Phenyl phosphate; Phosphoric acid, monophenyl ester; MONOPHENYL PHOSPHATE; monophenylphosphate; Phenolic phosphate; DTXSID6044981; 75M88J863E; DTXCID4024981; CHEBI:37548; RefChem:861812; 211-857-7; Phenylphosphoric acid; phenol phosphate

Frequently Asked Questions

What are the CAS number and molecular formula of Phenylphosphoric acid?

CAS 701-64-4; molecular formula C6H7O4P; molecular weight — g/mol.

What other names is Phenylphosphoric acid known by?

Phenyl dihydrogen phosphate, Phenylphosphate, 701-64-4, Phenyl phosphate, Phosphoric acid, monophenyl ester, MONOPHENYL PHOSPHATE.

What is the regulatory status of Phenylphosphoric acid?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Phenylphosphoric acid classified as hazardous?

6.2% of GHS notifications report no hazard classification (5 of 80).

What are the key physical properties of Phenylphosphoric acid?

Density: 1.14 (Water = 1); Dissociation Constants: pKa = 9.99.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.