p-Toluic acid

Description

p-Toluic acid · CAS 99-94-5 · C8H8O2. UNII A26GBX5SSV. Boiling Point: 525 to 527 °F at 760 mmHg (NTP, 1992); Melting Point: 356 to 360 °F (NTP, 1992); Melting Point: 181 °C.

Identification

CAS Registry Number	99-94-5
PubChem CID	7470
Molecular formula	C8H8O2
IUPAC name	4-methylbenzoic acid
UNII (FDA)	A26GBX5SSV

Computed Descriptors

Molecular Weight	136.15
XLogP3	2.3
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	1
Exact Mass	136.052429494
Monoisotopic Mass	136.052429494
Topological Polar Surface Area	37.3
Heavy Atom Count	10
Formal Charge	0

Physical & Chemical Properties

Boiling Point	525 to 527 °F at 760 mmHg (NTP, 1992)
Melting Point	356 to 360 °F (NTP, 1992)
Melting Point	181 °C
Solubility	0.34 mg/mL at 25 °C
Vapor Pressure	0.0061 [mmHg]
LogP	2.27
LogP	2.43

Physical description & handling notes

• P-toluic acid is a white powder. Sublimes. (NTP, 1992)
• Dry Powder
• White solid; [CAMEO] White to yellow-brown solid; [OECD SIDS] White powder; [Alfa Aesar MSDS]
• Solid
• less than 1 mg/mL at 66 °F (NTP, 1992)

Regulatory Status

GHS notification summary	2.8% (5 / 180)

GHS Hazard Classification

GHS notification summary	2.8% (5 / 180)
Reported hazard statements	H315 (10.6%), H317 (86.7%), H319 (11.7%)

Documented Uses

• Used in agricultural chemicals and as an animal feed supplement; [NTP] Used as an intermediate for photosensitive pigments, fluorescent dyes, and colorants; [OECD SIDS]
• Farming (Feed Additives) [Category: Industry]
• 2023: 1,000,000 - <8,500,000 lb
• 2022: 1,000,000 - <8,500,000 lb
• 2021: 1,000,000 - <8,500,000 lb
• All Other Basic Organic Chemical Manufacturing

Synonyms

4-Methylbenzoic acid; P-TOLUIC ACID; 99-94-5; 4-Toluic acid; p-Methylbenzoic acid; Crithminic acid; Benzoic acid, 4-methyl-; p-Toluylic acid; p-Carboxytoluene; Toluenecarboxylic acid; DTXSID6021618; A26GBX5SSV; NSC-2215; DTXCID801618; CHEBI:36635; RefChem:858222

Frequently Asked Questions

What are the CAS number and molecular formula of p-Toluic acid?

CAS 99-94-5; molecular formula C8H8O2; molecular weight — g/mol.

What other names is p-Toluic acid known by?

4-Methylbenzoic acid, P-TOLUIC ACID, 99-94-5, 4-Toluic acid, p-Methylbenzoic acid, Crithminic acid.

Is p-Toluic acid classified as hazardous?

2.8% of GHS notifications report no hazard classification (5 of 180).

What are the key physical properties of p-Toluic acid?

Boiling Point: 525 to 527 °F at 760 mmHg (NTP, 1992); Melting Point: 356 to 360 °F (NTP, 1992); Melting Point: 181 °C; Solubility: 0.34 mg/mL at 25 °C.

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.