Basic information Description References Safety Supplier Related
ChemicalBook >  Product Catalog >  Organic Chemistry >  Alcohols,Phenols,Phenol alcohols >  Phenol derivatives >  3,4-Dimethylphenol

3,4-Dimethylphenol

Basic information Description References Safety Supplier Related

3,4-Dimethylphenol Basic information

Product Name:
3,4-Dimethylphenol
Synonyms:
  • 1,2-Dimethyl-4-hydroxybenzene
  • 1,3,4-Xylenol
  • 3,4-dimethyl-pheno
  • 4,5-Dimethylphenol
  • 3 4-XYLENOL 98+%
  • 3,4-DIMETHYLPHENOL PESTANAL
  • 3,4-Dimethylphenol, 98+%
  • 3, 4-Xylenol (3,4-Dimethylphenol)
CAS:
95-65-8
MF:
C8H10O
MW:
122.16
EINECS:
202-439-5
Product Categories:
  • Aromatics
  • Aromatic Phenols
  • Industrial/Fine Chemicals
Mol File:
95-65-8.mol
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3,4-Dimethylphenol Chemical Properties

Melting point:
65-68 °C
Boiling point:
227 °C(lit.)
Density 
1,138 g/cm3
FEMA 
3596 | 3,4-XYLENOL
refractive index 
1.5442
Flash point:
61 °C
storage temp. 
Store below +30°C.
pka
pK1:10.32 (25°C)
form 
Crystalline Powder
color 
Off-white to pale cream
explosive limit
1.4%(V)
Water Solubility 
SLIGHTLY SOLUBLE
JECFA Number
708
Merck 
14,10082
BRN 
1099267
InChIKey
YCOXTKKNXUZSKD-UHFFFAOYSA-N
CAS DataBase Reference
95-65-8(CAS DataBase Reference)
NIST Chemistry Reference
Phenol, 3,4-dimethyl-(95-65-8)
EPA Substance Registry System
3,4-Dimethylphenol (95-65-8)
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Safety Information

Hazard Codes 
T,N
Risk Statements 
24/25-34-51/53
Safety Statements 
26-36/37/39-45-61
RIDADR 
UN 2261 6.1/PG 2
WGK Germany 
3
RTECS 
ZE6300000
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
II
HS Code 
29071400
Hazardous Substances Data
95-65-8(Hazardous Substances Data)

MSDS

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3,4-Dimethylphenol Usage And Synthesis

Description

3,4-methylphenol (also 3,4-xylenol) has a flat, dry odor. It can be used as a flavoring agent without safety concern at current levels of intake. 3,4-dimethylphenol is used as an agent in the spectrophotometric method to determine nitrate in plants, soils, and water. It is also used to produce adhesive/sealant and resins as negative photoresist for electroplating.

References

[1] R. R. Elton-Bott, A modified spectrophotometric method for nitrate in plants, soils and water by nitration of 3,4-dimethylphenol, Analytica Chimica Acta, 1977, vol. 90, 215-221
[2] George A. Burdock, Fenaroli’s Handbook of Flavor Ingredients, Sixth Edition, 2010
[3] Chia L. Wang, John Davis, Bryan Lienke, Polyurethane systems having non-sag paintability and primerless adhesion on concrete, Patent, 2012
[4] Yasuo Masuda, Yasushi Washio, Koji Saito, Method of forming plated product using negative photoresist composition and photosensitive composition used therein, Patent, 2012

Chemical Properties

YELLOW TO BROWNISH CRYSTALLINE MASS

Occurrence

Reported found in coffee, tomato, parmesan and romano cheese, smoked fatty fish, white wine, katsuobushi (dried bonito) and wood vinegar.

Aroma threshold values

Detection: 1.2 ppm

General Description

Colorless to light tan crystalline powder or solid. Odor threshold 1.2 mg/L. Taste threshold 0.05 mg/L.

Air & Water Reactions

Hygroscopic. Insoluble in water.

Reactivity Profile

3,4-Dimethylphenol is incompatible with bases, acid chlorides, acid anhydrides, and oxidizing agents. 3,4-Dimethylphenol corrodes steel, brass, copper, and copper alloys.

Fire Hazard

Flash point data for 3,4-Dimethylphenol are not available. 3,4-Dimethylphenol is probably combustible.

Purification Methods

Heat 3,4-xylenol with an equal weight of conc H2SO4 at 103-105o for 2-3hours, then dilute it with four volumes of water, reflux it for 1hour, and either steam distil or extract it repeatedly with diethyl ether after cooling to room temperature. The steam distillate is also extracted and evaporated to dryness. (The purification process depends on the much slower sulfonation of 3,4-dimethylphenol than most of its likely contaminants.). It can also be crystallised from water, hexane or pet ether, and sublimed in a vacuum. [Kester Ind Eng Chem (Anal Ed) 24 770 1932, Bernasconi & Paschalis J Am Chem Soc 108 29691986, Beilstein 6 IV 3099.]

3,4-Dimethylphenol Preparation Products And Raw materials

Raw materials

3,4-DimethylphenolSupplier

Powerful Chemical (Shanghai) Co., Ltd. Gold
Tel
021-62211590-
Email
pwfchem@163.com;
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Email
jkinfo@jkchemical.com;market6@jkchemical.com
INTATRADE GmbH
Tel
+49 3493/605464
Email
sales@intatrade.de
Alfa Aesar
Tel
400-610-6006; 021-67582000
Email
saleschina@alfa-asia.com
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386 / 800-988-0390
Email
Sales-CN@TCIchemicals.com