3,5-Dichloro-4-methylbenzoic acid
Application- Product Name
- 3,5-Dichloro-4-methylbenzoic acid
- CAS No.
- 39652-34-1
- Chemical Name
- 3,5-Dichloro-4-methylbenzoic acid
- Synonyms
- 3,5-Dichloro-4-MethylbenzoicAci;3,5-Dichloro-4-methylbenzoic acid;Benzoic acid, 3,5-dichloro-4-methyl-
- CBNumber
- CB7971765
- Molecular Formula
- C8H6Cl2O2
- Formula Weight
- 205.04
- MOL File
- 39652-34-1.mol
3,5-Dichloro-4-methylbenzoic acid Property
- Melting point:
- 187-189 °C(Solv: hexane (110-54-3))
- Boiling point:
- 330.9±37.0 °C(Predicted)
- Density
- 1.442±0.06 g/cm3(Predicted)
- storage temp.
- Sealed in dry,Room Temperature
- solubility
- Chloroform (Slightly), Methanol (Slightly)
- form
- Solid
- pka
- 3.63±0.10(Predicted)
- color
- White to Off-White
- InChI
- InChI=1S/C8H6Cl2O2/c1-4-6(9)2-5(8(11)12)3-7(4)10/h2-3H,1H3,(H,11,12)
- InChIKey
- GBEJAEMDMASLJL-UHFFFAOYSA-N
- SMILES
- C(O)(=O)C1=CC(Cl)=C(C)C(Cl)=C1
- CAS DataBase Reference
- 39652-34-1(CAS DataBase Reference)
- EPA Substance Registry System
- Benzoic acid, 3,5-dichloro-4-methyl- (39652-34-1)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P321Specific treatment (see … on this label).
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P362Take off contaminated clothing and wash before reuse.
N-Bromosuccinimide Price
- Product number
- W5999
- Product name
- 3,5-Dichloro-4-methylbenzoicacid
- Packaging
- 1g
- Price
- $34
- Updated
- 2021/12/16
- Product number
- FD140257
- Product name
- 3,5-Dichloro-4-methylbenzoic acid
- Packaging
- 2g
- Price
- $63
- Updated
- 2021/12/16
- Product number
- FD140257
- Product name
- 3,5-Dichloro-4-methylbenzoic acid
- Packaging
- 5G
- Price
- $126
- Updated
- 2021/12/16
- Product number
- W5999
- Product name
- 3,5-Dichloro-4-methylbenzoicacid
- Packaging
- 10g
- Price
- $187
- Updated
- 2021/12/16
- Product number
- FD140257
- Product name
- 3,5-Dichloro-4-methylbenzoic acid
- Packaging
- 10g
- Price
- $220
- Updated
- 2021/12/16
3,5-Dichloro-4-methylbenzoic acid Chemical Properties,Usage,Production
Application
3,5-Dichloro-4-methylbenzoic acid is an important chemical and pharmaceutical intermediate, widely used in bactericides, insecticides, and pharmaceutical intermediates.
Synthesis
99-94-5
39652-34-1
To a 1000 mL four-neck reaction flask (equipped with a mechanical stirrer, thermometer, dropping funnel, and reflux condenser) was added 136 g of p-toluic acid followed by 272 g of dichloroacetic acid as a solvent. Next, 0.2 g of sodium tungstate dihydrate was added as catalyst and 365 g of 30% hydrochloric acid was added. Stirring was initiated and the reaction mixture was heated to 50-60 °C. At this temperature, 136 g of 30% hydrogen peroxide was slowly added dropwise, and the dropwise process was controlled to be completed within 6 hours, during which the temperature was maintained at 50-60 °C. After the dropwise addition, the reaction was continued for 4 hours. The reaction mixture was analyzed by high performance liquid chromatography (HPLC) and the remaining content of p-toluic acid was confirmed to be 9.5%. After completion of the reaction, the reaction solution was distilled under reduced pressure. When no fraction evaporated, the temperature was lowered to 20-30 °C, 250 g of methanol was added, heated to reflux and then cooled to 10 °C again. The reaction mixture was filtered, the solid residue was collected and the filter cake was washed with methanol. The filter cake was dried to give a final product of 165.2 g of 3,5-dichloro-4-methylbenzoic acid in 80.6% yield and 98.5% HPLC purity.
References
[1] Patent: US5254584, 1993, A
[2] Patent: US5304572, 1994, A
[3] Patent: CN105859549, 2016, A. Location in patent: Paragraph 0006; 0011-0012
[4] Organic Process Research and Development, 1999, vol. 3, # 1, p. 10 - 16
3,5-Dichloro-4-methylbenzoic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 3,5-Dichloro-4-methylbenzoic acid manufacturers
- Product
- 3,5-Dichloro-4-methylbenzoic acid 39652-34-1
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- Customized
- Release date
- 2019-12-17