氯甲酚

Description

chlorocresol · CAS 1321-10-4 · C7H7ClO. UNII 36W53O7109. Boiling Point: 455 °F at 760 mmHg (NTP, 1992); Boiling Point: 235 °C; Boiling Point: 235 °C @760 [mm Hg].

Identification

CAS Registry Number	1321-10-4
PubChem CID	1732
Molecular formula	C7H7ClO
IUPAC name	4-chloro-3-methylphenol
UNII (FDA)	36W53O7109

Computed Descriptors

Molecular Weight	142.58
XLogP3	3.1
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	142.0185425
Monoisotopic Mass	142.0185425
Topological Polar Surface Area	20.2
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Boiling Point	455 °F at 760 mmHg (NTP, 1992)
Boiling Point	235 °C
Boiling Point	235 °C @760 [mm Hg]
Melting Point	151 °F (NTP, 1992)
Melting Point	67 °C
Melting Point	66 °C
Flash Point	230 °F (NTP, 1992)
Flash Point	118 °C
Solubility	In water, 3,830 mg/L at 25 °C
Density	1.37 g/cu cm

Physical description & handling notes

• Chlorocresol appears as a pinkish to white crystalline solid with a phenolic odor. Melting point 64-66 °C. Shipped as a solid or in a liquid carrier. Soluble in aqueous base. Toxic by ingestion, inhalation or skin absorption. Used as an external germicide. Used as a preservative in paints and inks.
• White to slightly pink crystals; Odorless or slightly phenolic odor; [CHEMINFO]
• WHITE OR SLIGHTLY PINK HYGROSCOPIC CRYSTALS OR CRYSTALLINE POWDER.
• Dimorphous crystals ... aqueous solutions turn yellow on exposure to light and air
• Crystals from petroleum ether
• White or slightly pink crystals

Regulatory Status

Regulatory & Food Contact

FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS p-chloro-m-cresol (CAS Reg. No. 59-50-7) For use as an antimicrobial preservative in lubricants with incidental food contact. The FCS is for use at a level not to exceed 1 percent by weight of lubricants for incidental food contact.

GHS Hazard Classification

Reported hazard statements	H302, H314, H317, H318, H335, H400, H412, H312 (95.4%)

Documented Uses

• CIR ingredient: p-Chloro-m-Cresol
• Used as a disinfectant, germicide, preservative, and fungicide; [HSDB]
• Using Disinfectants or Biocides [Category: Clean]
• External germicide; preservative for glues, gums, paints, inks, textile and leather goods.
• PCMC functions as a cosmetic biocide and as a preservative in cosmetic formulations.
• For more Uses (Complete) data for 3-METHYL-4-CHLOROPHENOL (8 total), please visit the HSDB record page.

Synonyms

4-Chloro-3-methylphenol; Chlorocresol; 59-50-7; 4-Chloro-m-cresol; p-Chloro-m-cresol; Ottafact; Baktol; Phenol, 4-chloro-3-methyl-; Baktolan; Candaseptic; PCMC; Peritonan; Raschit; Aptal; Preventol CMK; Raschit K

Frequently Asked Questions

What are the CAS number and molecular formula of chlorocresol?

CAS 1321-10-4; molecular formula C7H7ClO; molecular weight — g/mol.

What other names is chlorocresol known by?

4-Chloro-3-methylphenol, Chlorocresol, 59-50-7, 4-Chloro-m-cresol, p-Chloro-m-cresol, Ottafact.

What is the regulatory status of chlorocresol?

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

Is chlorocresol classified as hazardous?

Hazard statements reported: H302, H314, H317, H318, H335.

What are the key physical properties of chlorocresol?

Boiling Point: 455 °F at 760 mmHg (NTP, 1992); Boiling Point: 235 °C; Boiling Point: 235 °C @760 [mm Hg]; Melting Point: 151 °F (NTP, 1992).

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.