Methyl p-toluenesulfonate
- Product Name
- Methyl p-toluenesulfonate
- CAS No.
- 80-48-8
- Chemical Name
- Methyl p-toluenesulfonate
- Synonyms
- Methyl 4-methylbenzenesulfonate;MPTS;METHYL TOSYLATE;METHYL TOLUENE-4-SULPHONATE;PTSME;METHYL P-TOSYLATE;Methyl para-toluenesulfonate;4-TOLUENESULFONIC ACID METHYL ESTER;4-methyl-benzenesulfonicacimethylester;Benzenesulfonicacid,4-methyl-,methylester
- CBNumber
- CB8715537
- Molecular Formula
- C8H10O3S
- Formula Weight
- 186.23
- MOL File
- 80-48-8.mol
Methyl p-toluenesulfonate Property
- Melting point:
- 25-28 °C(lit.)
- Boiling point:
- 144-145 °C5 mm Hg(lit.)
- Density
- 1.234 g/mL at 25 °C(lit.)
- vapor density
- 6.45 (vs air)
- vapor pressure
- 1 mm Hg ( 20 °C)
- refractive index
- n20/D 1.5172(lit.)
- Flash point:
- >230 °F
- storage temp.
- 2-8°C
- solubility
- Chloroform (Slightly), Methanol (Slightly)
- form
- Liquid or Low Melting Solid
- color
- White to yellow
- Water Solubility
- Insoluble
- Sensitive
- Moisture Sensitive
- BRN
- 609209
- LogP
- 1.88 at 25℃
- CAS DataBase Reference
- 80-48-8(CAS DataBase Reference)
- NIST Chemistry Reference
- Benzenesulfonic acid, 4-methyl-, methyl ester(80-48-8)
- EPA Substance Registry System
- Benzenesulfonic acid, 4-methyl-, methyl ester (80-48-8)
Safety
- Hazard Codes
- C,Xn
- Risk Statements
- 22-34-43-40-36/37/38
- Safety Statements
- 26-36/37/39-45-24
- RIDADR
- UN 3261 8/PG 2
- WGK Germany
- 3
- RTECS
- XT7000000
- F
- 21
- Autoignition Temperature
- 896 °F
- TSCA
- Yes
- HazardClass
- 8
- PackingGroup
- III
- HS Code
- 29051900
- Hazardous Substances Data
- 80-48-8(Hazardous Substances Data)
- Toxicity
- LD50 orally in Rabbit: 341 mg/kg
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P270Do not eat, drink or smoke when using this product.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
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.
N-Bromosuccinimide Price
- Product number
- 8.08333
- Product name
- Methyl-4-toluenesulfonate
- Purity
- for synthesis
- Packaging
- 100g
- Price
- $36.1
- Updated
- 2024/03/01
- Product number
- 8.08333
- Product name
- Methyl-4-toluenesulfonate
- Purity
- for synthesis
- Packaging
- 500g
- Price
- $104
- Updated
- 2024/03/01
- Product number
- 8.08333
- Product name
- Methyl-4-toluenesulfonate
- Purity
- for synthesis
- Packaging
- 2.5kg
- Price
- $383
- Updated
- 2024/03/01
- Product number
- 8.08333
- Product name
- Methyl-4-toluenesulfonate
- Purity
- for synthesis
- Packaging
- 25kg
- Price
- $1130
- Updated
- 2024/03/01
- Product number
- 158992
- Product name
- Methyl p-toluenesulfonate
- Purity
- 98%
- Packaging
- 100g
- Price
- $41.9
- Updated
- 2024/03/01
Methyl p-toluenesulfonate Chemical Properties,Usage,Production
Chemical Properties
white to slightly yellow low melting solid. Soluble in alcohol, ether, benzene, insoluble in water. Hygroscopic.
Uses
Methyl p-toluenesulfonate is used as a methylating agent in organic synthesis. It acts as a catalyst for alkyd resins. It is also employed in selective 1-substitution reaction of tetrazole. Further, it is used in the preparation of dyes.
Uses
Methyl p-Toluenesulfonate can be used in the manufacture of dyes and organic synthesis, and also is the raw materials of methylation.
Preparation
Methyl p-toluenesulfonate was synthesized by the reaction of p-toluenesulfonyl chloride with methanol. Mix p-toluenesulfonyl chloride and methanol, slowly add 25% sodium hydroxide solution, control the temperature below 25 °C, stop adding alkali when the pH is 9, continue stirring for 2 hours, and leave overnight. The lower layer of reactant was taken, the upper layer was extracted with benzene, the extract was recovered with benzene and then combined with the lower layer, washed with water and 5% potassium carbonate solution in turn, dried and distilled under reduced pressure to obtain the finished product of methyl p-toluenesulfonate.
Synthesis Reference(s)
Chemical and Pharmaceutical Bulletin, 29, p. 623, 1981 DOI: 10.1248/cpb.29.623
Synthetic Communications, 15, p. 1057, 1985 DOI: 10.1080/00397918508076842
General Description
Methyl p-toluenesulfonate is sulfonate ester present as potentially genotoxic impurity in drug substances. Kinetics of reactions of methyl p-toluenesulfonate with N,N-dimethylaniline has been investigated. It participates in selective 1-substitution reaction of tetrazole.
Hazard
Toxic by ingestion and inhalation, strongirritant to skin and eyes.
Safety Profile
Poison by ingestion and subcutaneous routes. An eye and severe skin irritant. A vesicant and skin sensitizer. Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits toxic fumes of SOx.
Purification Methods
The ester is purified by distillation in vacuo and could be crystallised from pet ether or Et2O/pet ether at low temperature. It is a powerful methylating agent, is TOXIC andis a skin irritant, so it is better to purify it by repeated distillation. [IR: Schreiber Anal Chem 21 1168 1949, Buehler et al. J Org Chem 2 167 1937, Roos et al. Org Synth Coll Vol I 145 1948, Beilstein 11 IV 247.]
Methyl p-toluenesulfonate Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Methyl p-toluenesulfonate manufacturers
- Product
- Methyl p-toluenesulfonate 80-48-8
- Price
- US $0.00/Kg/Drum
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 2000mt/year
- Release date
- 2021-08-31
- Product
- Methyl p-toluenesulfonate 80-48-8
- Price
- US $100.00/kg
- Min. Order
- 1kg
- Purity
- >99%
- Supply Ability
- 50 TONS
- Release date
- 2023-10-08
- Product
- Methyl p-toluenesulfonate 80-48-8
- Price
- US $3.00-1.00/kg
- Min. Order
- 1kg
- Purity
- 99.9%
- Supply Ability
- 10 tons
- Release date
- 2024-03-12