133-53-9 Usage
Description
2,4-Dichloro-3,5-dimethylphenol is a chemical compound characterized by its light beige powder appearance and a phenolic characteristic odor. It is a white to off-white powder or block mass powder with a minimum content of active matter at 98.0%. 2,4-Dichloro-3,5-dimethylphenol has a melting range of 92-95°C and a boiling point of 269°C. It is sparingly soluble in water at 20°C with a solubility of 0.2g/L. The dry loss is maximum at 0.10%, and it contains a maximum of 80 ppm iron, 0.5% maximum residue on ignition, 0.5% maximum water content, and 0.001% maximum total heavy metal. The solubility of 2,4-Dichloro-3,5-dimethylphenol results in a clear solution.
Uses
Used in Soap Industry:
2,4-Dichloro-3,5-dimethylphenol is used as a bacteriostat in soaps, helping to inhibit the growth of bacteria and maintain cleanliness.
Used as a Mold Inhibitor and Preservative:
2,4-Dichloro-3,5-dimethylphenol serves as a mold inhibitor and preservative in various applications, preventing the growth of mold and preserving the quality of products.
Used in Aqueous Functional Fluids:
2,4-Dichloro-3,5-dimethylphenol is used as a preservative in aqueous functional fluids, ensuring the stability and longevity of these fluids.
Used as a Microbicide in Disinfectants:
2,4-Dichloro-3,5-dimethylphenol is also used as a microbicide in disinfectants, helping to eliminate microorganisms and promote a hygienic environment. However, it is of lesser importance compared to PCMX due to its more intense smell and lower solubility in water.
Preparation
2,4-Dichloro-3,5-dimethylphenol is obtained by reaction of 4-chloro-3,5-dimethylphenol with N-chloroacetamide in glacial acetic acid with concentrated HCl.
Solubility in organics
2,4-Dichloro-3,5-dimethylphenol is soluble in alkali solutions, and readily soluble in organic solvents.
Solubility in water
It has a solubility in water of 0.2 g/L at 20 °C.
TEST ITEMS
SPECIFICATION
ODOUR
PHENOLIC CHARACTERISTIC ODOUR
CONTENT OF ACTIVE MATTER
98.0% min
MELT RANGE
92-95
°
C
BOILING POINT
269
°
C
SOLUBILITY 20
°
C/WATER
0.2g/L
DRY LOSS
0.10% max
IRON
80 ppm max
RESIDUE ON IGNITION
0.5% max
WATER
0.5% max
TOTAL HEAVY METAL
0.001% max
SOLUBILITY
CLEAR SOLUTION
Check Digit Verification of cas no
The CAS Registry Mumber 133-53-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,3 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 133-53:
(5*1)+(4*3)+(3*3)+(2*5)+(1*3)=39
39 % 10 = 9
So 133-53-9 is a valid CAS Registry Number.
InChI:InChI=1/C8H8Cl2O/c1-4-3-6(11)8(10)5(2)7(4)9/h3,11H,1-2H3
133-53-9Relevant articles and documents
Regioselective synthesis of important chlorophenols in the presence of methylthioalkanes with remote SMe, OMe or OH substituents
Smith, Keith,Al-Zuhairi, Ali J.,Elliott, Mark. C.,El-Hiti, Gamal A.
, p. 607 - 621 (2018/07/13)
Various methylthio alcohols, methoxy(methylthio)alkanes and bis(methylthio)alkanes have been used as regioselectivity modifiers in the chlorination reactions of various phenols at room temperature. The process involves the use of a slight excess of sulfuryl chloride in the presence of aluminum or ferric chloride as an activator. Methylthio alcohols, methoxy(methylthio)alkanes and bis(methylthio)alkanes having 2 and 3 methylene groups as a spacer were found to be good for the para-selective chlorination of o-cresol and phenol. On the other hand, methylthio alcohols, methoxy(methylthio)alkanes and bis(methylthio)alkanes having 6 and 9 methylene groups were found to be good for the selective para-chlorination of m-xylenol and m-cresol. Calculations using density functional theory on bis(methylthio)alkanes have suggested two different types of stable chlorinated intermediates depending on the number of methylene units as a spacer.
Method of disinfecting premises from coccidial oocysts using generated ammonia
-
, (2008/06/13)
A method of disinfecting premises from coccidial oocysts in which surface to be disinfected is thoroughly wetted with a first aqueous solution of ammonium salt containing approximately 0.5 to 1.5 molar of ammonium together with non-ionic surfactant and indicator having a color change in the region of pH 8 to pH 10 and the wetted surface is then covered with sufficient of a second aqueous solution of alkali metal hydroxide containing approximately 0.75 to 2.3 molar of hydroxide toether with phenolic bactericide to cause the indicator to change color on the treated surface. A preparation for use in such a method comprises a first package containing ammonium salt together with non-ionic surfactant and indicator and second package containing alkali metal hydroxide and phenolic bactericide, the molar amount of hydroxide in the second package being greater than the molar amount of ammonium in the first package.
