4-chloro-m-cresol is a hydroxytoluene that is 3-methylphenol which is substituted by a chlorine at position 4.
- Korean limit
- 0.04%
Definition
p-Chloro-m-Cresol is the substituted phenol that conforms to the formula:
4-chloro-m-cresol is a hydroxytoluene that is 3-methylphenol which is substituted by a chlorine at position 4. A ryanodine receptor agonist. It has a role as an antimicrobial agent, a disinfectant and a ryanodine receptor agonist. It is a hydroxytoluene and a member of monochlorobenzenes.
Source: PubChem
US FDA substance register · UNII 36W53O7109 · registered name CHLOROCRESOL · single chemical substance
Cosmetic roles
Safety & regulatory references
- Allowed preservative
- United Kingdom
Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · Japan Standards for Cosmetics · Taiwan FDA cosmetic ingredients · UK cosmetics regulations (OPSS)
Argentina · Brazil
- Maximum concentration permitted at final product : 0.2%
- Other limitations and requirements : Prohibited in products intended to come into contact with mucous.
ASEAN
- Maximum authorised concentration in the finished cosmetic product : 0.2%
- Other limitations and requirements : Prohibited in products intended to come into contact with mucous membranes
Canada
- Conditions of Use by product type : (a) Not permitted in cosmetics intended to be used on or around mucosal membranes such as eyes, nose or mouth (b) Other cosmetics
- Maximum Concentration Permitted : (b) 0.1%
- Warnings and Cautionary Statements: (to the effect of) : "Do not use in the area of the eye, mouth or nose"
Taiwan
- 0.2%
Japan
- Maximum amount per 100 g(Maximum amount of ingredient per 100 g) : 0.50(0.50 g)
China
- Maximum concentration : 0.2%
South Korea
- Maximum concentration : 0.04%
European Union
- Product Type, body parts : Not to be used in products applied on mucous membranes
- Maximum concentration in ready for use preparation : 0.2%
Source: MFDS (Korea) cosmetic regulatory information
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
EU Cosmetics Regulation, Annex V (allowed preservatives), entry 24 · maximum concentration 0.2% · applies to Not to be used in products applied on mucous membranes
Restriction V/24 · Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
Reviewed by CIR: Final Report on the Safety Assessment of Sodium p-Chloro-m-Cresol, p-Chloro-m-Cresol, Chlorothymol, Mixed Cresols, m-Cresol, o-Cresol, p-Cresol, Isopropyl Cresols, Thymol, o-Cymen-5-ol and Carvacrol
Reviewed by CIR: Final Report on the Safety Assessment of p-Chloro-m-Cresol
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name クロルクレゾール: 本品は、次の化学式で表されるメタクレゾールの誘導体である。
Source: JCIA labelling names (Japan)
JCIA labelling name p-クロロ-m-クレゾール: 本品は、次の化学式で表されるメタクレゾールの誘導体である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 59-50-7
- EC No.EU chemical inventory number
- 200-431-6
- DTXSIDUS EPA chemical ID
- DTXSID4021717
- DTXCIDUS EPA compound ID
- DTXCID601717
- IUPAC
- 4-Chloro-3-methylphenol
- Molecular formula
- C7H7ClO
- Molecular weight
- 142.58 g/mol
Measured properties
- Appearance
- 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]
- Odour
- Said to be odorless when very pure, but usually a phenolic odor persists
- Boiling point
- 455 °F at 760 mmHg (NTP, 1992) · 235 °C
- Melting point
- 151 °F (NTP, 1992) · 67 °C
- Solubility
- less than 1 mg/mL at 68 °F (NTP, 1992) · Soluble in alkalies, organic solvents, fats, and oils
- Density
- 0.9 at 77 °F (NTP, 1992) - Less dense than water, will float · 1.37 g/cu cm
- Stability
- Aq solns turn yellow on exposure to light and air. · Stable at normal and elevated temperature over a period of 14-day period. Corrosive to metals and forms complex compounds with transition metal ions. Slow discoloration of the chemical occurs in the presence of sunlight. /In storage,/ stable for 12 months.
- pH
- pH = 5.6 in saturated aqueous solution · 5.6
- Dissociation constant
- pKa = 9.55
- Odour threshold
- 0.1 ppm
- Melting/freezing point
- 67 ℃
- Initial boiling point and range
- 235 ℃
- Flash point
- 118 ℃
- Vapour pressure
- 0.05 ㎜Hg (20℃)
- Water solubility
- 0.383 g/100㎖ (25℃)
- Relative density
- 1.4
- n-Octanol/water partition coefficient (Kow)
- 3.1
- Auto-ignition temperature
- 590 ℃
- Molecular weight
- 142.59
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: PubChem · KOSHA safety data sheets (Korea)
What products actually use it for
What the 15 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Biocide10
- Preservative4
- Processing aids not otherwise specified1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
8 skin studies and 4 eye studies are on record.
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 12 studies
- Category 6.5B (Category 1)
Skin Sensitization · Read Across - High Frequency of Sensitization
skin sensitisation: in vivo (non-LLNA) · Screening · according to other guideline: - High Frequency of Sensitization
skin sensitisation · Screening · according to other guideline: - Classification not possible
Skin Irritation · Screening - Skin Sens. 1
Skin Sensitization · Authoritative - Corrosive
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to - Category 1
Skin Sensitization · Screening - Sh
Skin Sensitization · Authoritative - Eye Dam. 1
Eye Irritation · Authoritative - Category 1
Eye Irritation · Screening - Corrosive or Irritation Persists for > 21 days
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to - Category 8.3A (Category 1)
Eye Irritation · Read Across
Source: US EPA CompTox dashboard
Related literature
- Permeation and destructive effects of disinfectants on protective gloves · 1990
- Final Report on the Safety Assessment of Sodium p -Chloro- m -Cresol, p -Chloro- m -Cresol, Chlorothymol, Mixed Cresols, m -Cresol, o -Cresol, p -Cresol, Isopropyl Cresols, Thymol, o -Cymen-5-ol, and Carvacrol1 · 2006
- Leucocytoclastic vasculitis, hepatitis C virus‐associated mixed cryoglobulinaemia with biclonal gammopathy and Waldenström macroglobulinaemia · 2004
- Contact urticaria due to p‐chloro‐m‐cresol · 2004
- Final Report on the Safety Assessment of p-Chloro-m-Cresol · 1997
Linked databases 29
- ASEAN Cosmetic Directive
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- ChEMBL
- China inventory of existing ingredients (IECIC)
- EU allowed preservatives (Annex V)
- EU CosIng ingredient list 2
- EU Cosmetics Regulation
- Health Canada Cosmetic Ingredient Hotlist
- Japan Standards for Cosmetics
- JCIA labelling names (Japan)
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register 2
- MFDS (Korea) cosmetic regulatory information 2 3 4
- NIST Chemistry WebBook
- PubChem 2
- Taiwan FDA cosmetic ingredients
- Tlooto literature search 2 3 4 5
- UK cosmetics regulations (OPSS)
- UniChem cross-reference IDs
- US Cosmetic Ingredient Review (CIR) 2 3
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · English · Chinese