Molekula
Methyl benzene sulfonate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Methyl benzene sulfonate is an organic sulfonate ester used as a reagent in synthetic chemistry, particularly as a methylating agent in O-, N- and S-methylation reactions. It appears as a colorless to pale yellow liquid with a molecular weight of 172.20 g/mol and a CAS number of 80-18-2. It is stored at 2 to 8 °C and is classified as a hazardous substance with a signal word of Danger. Molekula supplies methyl benzene sulfonate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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100 mL — $102.60 per pack
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless to pale yellow liquid |
| Water | ≤ 0.5% |
| Ash | ≤ 0.1% |
| Assay | ≥ 98.0% |
| Identification (IR) | Conforms to reference |
| Benzenesulphonic acid | ≤ 0.2% |
| Benzenesulphonyl chloride | ≤ 0.2% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90031782 |
| CAS Number | 80-18-2 |
| IUPAC Name | methyl benzenesulfonate |
| EC Number | 201-256-8 |
| Molecular Formula | C6H5SO3CH3 |
| Molecular Weight | 172.20 |
| Exact Mass | 172.0194 |
| SMILES | COS(=O)(=O)C1=CC=CC=C1 |
| InChIKey | CZXGXYBOQYQXQD-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H8O3S/c1-10-11(8,9)7-5-3-2-4-6-7/h2-6H,1H3 |
| PubChem CID | 6630 |
| UN Number | UN3265 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29309029 |
| Tariff Code | 2930909899 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H335 May cause respiratory irritation
- H341 Suspected of causing genetic defects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Benzenesulfonic acid, methyl ester
- Benzolsulfonsauremethylester
- Methyl benzenesulphonate
- Methyl besylate
- Methyl ester of benzenesulphonic acid
Frequently asked questions
What is methyl benzene sulfonate used for?
It is primarily used as a methylating agent in organic synthesis and as an intermediate in the production of surfactants and dyes.
What is the chemical formula and molecular weight of methyl benzene sulfonate?
The formula is C6H5SO3CH3 with a molecular weight of 172.20 g/mol.
How should methyl benzene sulfonate be stored?
It should be stored at temperatures between 2 to 8 °C, protected from light and moisture.
What grade of methyl benzene sulfonate does Molekula supply?
Molekula supplies methyl benzene sulfonate in reagent grade.
Can Molekula supply methyl benzene sulfonate in bulk?
Yes, Molekula can supply methyl benzene sulfonate in bulk quantities upon request.
What documentation comes with a purchase of methyl benzene sulfonate?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.