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m-Cresol

Uses
Product Name
m-Cresol
CAS No.
108-39-4
Chemical Name
m-Cresol
Synonyms
3-METHYLPHENOL;META-CRESOL;Phenol,3-methyl-;m-Cresole;m-Kresol;3-Cresol;M-METHYLPHENOL;m-Cesol;M-CRESOL;m-Toluol
CBNumber
CB7852747
Molecular Formula
C7H8O
Formula Weight
108.14
MOL File
108-39-4.mol
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m-Cresol Property

Melting point:
8-10 °C(lit.)
Boiling point:
203 °C(lit.)
Density 
1.034 g/mL at 25 °C(lit.)
vapor density 
3.72 (vs air)
vapor pressure 
<1 mm Hg ( 20 °C)
refractive index 
n20/D 1.541(lit.)
FEMA 
3530 | M-CRESOL
Flash point:
187 °F
storage temp. 
Store below +30°C.
solubility 
23.5g/l; Soluble 2 % in water, soluble in alcohol and oils.
pka
10.01(at 25℃)
form 
Liquid
color 
Clear colorless to slight red
Odor
Dry-tarry, medicinal-leathery odor
PH
5 (20g/l, H2O, 20℃)
explosive limit
1.06-1.35%, 150°F
Odor Threshold
0.0001ppm
Odor Type
phenolic
Water Solubility 
20 g/L (20 ºC)
λmax
273nm(lit.)
JECFA Number
692
Merck 
14,2579
BRN 
506719
Dielectric constant
11.5
Exposure limits
ACGIH: TWA 20 mg/m3 (Skin)
NIOSH: IDLH 250 ppm; TWA 2.3 ppm(10 mg/m3)
Stability:
Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, strong acids, aluminium, aluminium alloys. Air and light sensitive. Hygroscopic.
LogP
1.96
CAS DataBase Reference
108-39-4(CAS DataBase Reference)
NIST Chemistry Reference
Phenol, 3-methyl-(108-39-4)
EPA Substance Registry System
m-Cresol (108-39-4)
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Safety

Hazard Codes 
T
Risk Statements 
24/25-34-39/23/24/25-23/24/25
Safety Statements 
36/37/39-45-36/37
OEB
B
OEL
TWA: 2.3 ppm (10 mg/m3)
RIDADR 
UN 2076 6.1/PG 2
WGK Germany 
1
RTECS 
GO6125000
8
Autoignition Temperature
626 °C
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
II
HS Code 
29071200
Hazardous Substances Data
108-39-4(Hazardous Substances Data)
Toxicity
LD50 orally in rats: 2.02 g/kg (Deichmann, Witherup)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H314Causes severe skin burns and eye damage

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P270Do not eat, drink or smoke when using this product.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W353000
Product name
m-Cresol
Purity
≥98%, FG
Packaging
1kg
Price
$96.8
Updated
2024/03/01
Sigma-Aldrich
Product number
W353000
Product name
m-Cresol
Purity
≥98%, FG
Packaging
10Kg
Price
$482
Updated
2024/03/01
Sigma-Aldrich
Product number
W353000
Product name
m-Cresol
Purity
≥98%, FG
Packaging
25kg
Price
$885
Updated
2024/03/01
Sigma-Aldrich
Product number
8.09691
Product name
m-Cresol
Purity
for synthesis
Packaging
100mL
Price
$61.4
Updated
2024/03/01
Sigma-Aldrich
Product number
8.09691
Product name
m-Cresol
Purity
for synthesis
Packaging
500mL
Price
$94.3
Updated
2024/03/01
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m-Cresol Chemical Properties,Usage,Production

Uses

m-Cresol is an important organic intermediate (building block) to synthetize substituted aryl products.

Chemical Properties

colourless to light yellow liquid

Chemical Properties

Cresol is a mixture of the three isomeric cresols, o-, m-, and p-cresol. Cresols are slightly soluble in water. m-Isomer: Colorless or yellow liquid with characteristic odor.

Chemical Properties

m-Cresol has a dry, tarry, medicinal–leathery odor. m-Cresol and p-cresol very often occur together and are difficult to separate.

Occurrence

Reported found in beer, coffee, egg, grape, Oriental tobacco, roasted barley, rum, sherry and whiskey.

Uses

m-Cresol is used as a disinfectant and solvent. LysolTM disinfectant is a 50% (v/v) mixed-cresol isomer in a soap emulsion formed on mixing with water. The isomer m-cresol is an oily liquid with low volatility. Besides disinfection at solutions of 1–5%, the cresols are used in degreasing compounds, paintbrush cleaners, and additives in lubricating oils. Cresols were once widely used for disinfection of poultry houses, but this use has been discontinued because they cause respiratory problems and abdominal edema in young chicks. m-Cresol has been used in synthetic resins, explosives, petroleum, photographic, paint, and agricultural industries.

Uses

m-Cresol is employed in the preparation of synthetic resins like phenol-formaldehyde resins, disinfectants, and photographic developers. It is used as industrial solvent for dissolving polymers such as polyaniline. It acts as a precursor to vitamin E and antiseptic amylmetacresol. It is used as insuline preservatives.

Uses

Antiseptic; antimicrobial preservative.

Definition

ChEBI: A cresol with the methyl substituent at position 3. It is a minor urinary metabolite of toluene.

Production Methods

The cresols (cresylic acids) are methyl phenols and generally appear as a mixture of isomers. m-Cresol is prepared from m-toluic acid or obtained from coal tar or petroleum (352, 355, 356). Crude cresol is obtained by distilling “gray phenic acid” at a temperature of ~180–201°C. The m-cresol may be separated from the crude or purified mixture by repeated fractional distillation in vacuo. It can also be prepared synthetically by diazotization of the specific toluidine or by fusion of the corresponding toluenesulfonic acid with sodium hydroxide.

Preparation

One process involving butylation and separation and followed by dealkylation produces m-cresol and ditertiary butyl p-cresol. From m, p-cresol (which is the main product of the recovery process) pure m-cresol can be obtained by extraction.

Aroma threshold values

Aroma characteristics at 1.0%: phenolic, spicy eugenol-like, medicinal, smoky powdery with a leatherlike note.

Taste threshold values

Taste characteristics at 2 ppm: phenolic, smoky, balsamic, medicinal and spicy eugenol-like

General Description

Colorless liquid with a sweet tarry odor. Sinks and mixes slowly with water.

Air & Water Reactions

Water soluble.

Reactivity Profile

m-Cresol is sensitive to air, light and heat. m-Cresol is also hygroscopic. m-Cresol can react vigorously with strong oxidizers and strong bases. m-Cresol reacts violently with nitric acid, oleum, chlorosulfonic acid, metals and strong acids. If the water content is below approximately 0.3% and the temperature above 248° F, the corrosion of aluminum and its alloys may occur violently. m-Cresol will attack some forms of plastics, coatings and rubber.

Hazard

Questionable carcinogen.

Health Hazard

INHALATION: Mucosal irritation and systemic poisoning EYES: Intense irritation and pain, swelling of conjunctiva, and corneal damage may occur. SKIN: Intense burning, loss of feeling, wrinkling, white discoloration, and softening. Gangrene may occur. INGESTION: Burning sensation in mouth and esophagus. Vomiting may result. Acute exposure by all routes may cause muscular weakness, gastroenteric disturbances, severe depression, collapse. Effects are primarily on CNS and edema of lungs. Injury of spleen and pancreas may occur.

Flammability and Explosibility

Not classified

Contact allergens

Metacresol is contained as a preservative in almost all human insulin. It has been reported as a cause of allergic reaction due to injected insulin.

Safety Profile

v Poison by ingestion, intravenous, intraperitoneal, and subcutaneous routes. Moderately toxic by skin contact. Severe eye and skin irritant. An experimental teratogen. Human mutation data reported. Questionable carcinogen with experimental neoplastigenic data. Flammable when exposed to heat or flame. Moderately explosive in the form of vapor when exposed to heat or flame. See also other cresol entries and PHENOL.

Potential Exposure

Cresol is used as a disinfectant and fumigant; as an ore flotation agent, and as an intermediate in the manufacture of chemicals, dyes, plastics, and antioxidants. A mixture of isomers is generally used; the concentrations of the components are determined by the source of the cresol.

Carcinogenicity

m-Cresol has induced a few papillomas but no carcinomas in tumor studies.

Shipping

UN2076 Cresols, liquid, Hazard class: 6.1; Labels: 6.1-Poisonous materials, 8-Corrosive material. UN3455 Cresols, solid, Hazard class: 6.1; Labels: 6.1- Poisonous materials, 8-Corrosive material.

Purification Methods

Separation of the m-and p-cresols requires chemical methods, such as conversion to their sulfonates [Brüchner Anal Chem 75 289 1928]. An equal volume of H2SO4 is added to m-cresol, stirred with a glass rod until solution is complete. Heat for 3hours at 103-105o. Dilute carefully with 1-1.5 volumes of water, heat to boiling point and steam distil until all unsulfonated cresol has been removed. Cool and extract the residue with ether. Evaporate the solution until the boiling point reaches 134o and steam distil off the m-cresol. Another purification method involves distillation, fractional crystallisation from the melt, then redistillation. Free from p-cresol by solution in glacial acetic acid and bromination by about half of an equivalent amount of bromine in glacial acetic acid. The acetic acid is distilled off, then fractional distillation of the residue under vacuum gives bromocresols from which 4-bromo-m-cresol is obtained by crystallisation from hexane. Addition of the bromocresol in glacial acetic acid slowly to a reaction mixture of HI and red phosphorus or (more smoothly) of HI and hypophosphorus acid, in glacial acetic acid, at reflux, removes the bromine. After an hour, the solution is distilled at atmospheric pressure until layers are formed. Then it is cooled and diluted with water. The cresol is extracted with ether, washed with water, NaHCO3 solution and again with water, dried with a little CaCl2 and distilled [Baltzly et al. J Am Chem Soc 77 2522 1955]. The 3,5-dinitrobenzoate (prepared with 3,5-dinitrobenzoyl chloride in dry pyridine, and recrystallised from EtOH or aqueous Me2CO) has m 165o. [Beilstein 6 IV 2035.]

Incompatibilities

Vapors may form explosive mixture with air. Incompatible with strong acids; oxidizers, alkalies, aliphatic amines; amides, chlorosulfonic acid; oleum. Decomposes on heating, producing strong acids and bases, causing fire and explosion hazard. Liquid attacks some plastics and rubber. Attacks many metals.

Waste Disposal

Wastewaters may be subjected to biological treatment. Concentrations may be further reduced by ozone treatment. High concentration wastes may be destroyed in special waste incinerators.

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m-Cresol Suppliers

Qingdao Baiyi Chemical Co., Ltd
Tel
13053388919; 13053388919
Email
1454485610@qq.com
Country
China
ProdList
510
Advantage
58
Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel
400-400-6206333 18521732826
Fax
021-50323701
Email
market@aladdin-e.com
Country
China
ProdList
25003
Advantage
65
Guangdong Wengjiang Chemical Reagent Co., Ltd.
Tel
0751-2886766 13927870850
Fax
0751-2886756
Email
3001267247@qq.com
Country
China
ProdList
9974
Advantage
58
Changzhou Junchi Chemical Co.,ltd.
Tel
0519-85518211 15195021697
Email
85518211@chemjunchi.com
Country
China
ProdList
62
Advantage
58
Shanghai Aoguang Biotechnology Co., Ltd
Tel
1735-4997695 17715859063
Email
1204996172@qq.com
Country
China
ProdList
247
Advantage
58
Shanghai Aladdin Biochemical Technology Co.,Ltd.
Tel
+86-18521732826
Email
market@aladdin-e.com
Country
China
ProdList
48461
Advantage
58
Shanghai Yanze Chemical Co., Ltd
Tel
021-13621551597 19962611955
Email
260924549@qq.com
Country
China
ProdList
73
Advantage
58
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
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View Lastest Price from m-Cresol manufacturers

Hebei Yanxi Chemical Co., Ltd.
Product
m-Cresol 108-39-4
Price
US $0.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
20 tons
Release date
2023-11-30
Hebei Chuanghai Biotechnology Co,.LTD
Product
m-Cresol 108-39-4
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 ton
Release date
2024-08-21
Hebei Mojin Biotechnology Co., Ltd
Product
m-Cresol 108-39-4
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-11-24

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