Methyl methanesulfonate
66-27-3
99%
Bottle,barrel,cargo,container,etc.
2026-07-15
Intermediates,Building blocks,API,Silicones,Peptides,Lab chemicals
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Product Description
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Seller Information
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DescriptionKeywords
66-27-3
Methyl methanesulfonate
C2H6O3S
Quick DetailsProName:Methyl methanesulfonate
CasNo:66-27-3
Molecular Formula:C2H6O3S
Appearance:powder, or liquid
Application:Pharmaceuticals, intermediates, APIs, custom synthesis, chemicals
DeliveryTime:5-7 Days
PackAge:Bottle, barrel, cargo, container, etc.
Port:Shanghai
Purity:99
Storage:Stored in room temperature, ventilated place
Transportation:By air, ship, express, etc.
LimitNum:0
Grade:Industrial Grade
SuperiorityBest Seller, High Quality, Competitive Price, Fast Delivery, Quick Response
DetailsLEAPChem supplies high quality Pharmaceuticals, intermediates, APIs, custom synthesis, fine chemicals and other industrial chemicalsBasic Info-
Product Name:
Methyl methanesulfonate
Other Name:Methanesulfonic acid,methyl ester;Methyl methanesulphonate;MMS;Methyl methanesulfonate;Methyl methylsulfonate;NSC 50256;Methyl mesylate
CAS No.:66-27-3
Molecular Formula:C2H6O3S
InChIKeys:InChIKey=MBABOKRGFJTBAE-UHFFFAOYSA-N
Molecular Weight:110.13
Exact Mass:110.13
EC Number:200-625-0
UNII:AT5C31J09G
NSC Number:50256
UN Number:2922
DSSTox ID:DTXSID7020845
NCI Thesaurus Code:C44399
Color/Form:Colorless liquid
HScode:29051900
Categories:
Characteristics-
PSA:
51.8
XLogP3:-0.4
Appearance:Methyl methanesulfonate is a colorless to amber liquid. (NTP, 1992)
Density:1.2943 g/cm3 @ Temp: 20 °C
Melting Point:20 °C
Boiling Point:203 °C @ Press: 753 Torr
Flash Point:104.4±0.0 °C
Refractive Index:1.406
Water Solubility:200 g/L (20 ºC)
Storage Conditions:PRECAUTIONS FOR "CARCINOGENS": Storage site should be as close as practical to lab in which carcinogens are to be used, so that only small quantities required for ... expt need to be carried. Carcinogens should be kept in only one section of cupboard, an explosion-proof refrigerator or freezer (depending on chemicophysical properties ...) that bears appropriate label. An inventory ... should be kept, showing quantity of carcinogen & date it was acquired ... Facilities for dispensing ... should b
Vapor Pressure:0.8 hPa (59 °C)
Toxicity:LD50 orally in Rabbit: 225 mg/kg
Henrys Law Constant:Henry's Law constant = 4.0X10-6 atm-cu m/mol at 25 °C (est)
Experimental Properties:Hydroxyl radical reaction rate constant = 2.3X10-13 cu cm/molecule-sec at 25 °C (est)|... decompose on distillation at normal pressure ... darken when stored in the absence of light ... form hydrates, are hygroscopic, and dissolve readily in water /Alkanesulfonic acids/
Air and Water Reactions:Water soluble.
Reactive Group:Sulfonates, Phosphonates, and Thiophosphonates, Organic
Reactivity Profile:METHYL METHANESULFONATE is incompatible with strong oxidizing agents, strong acids and strong bases. (NTP, 1992)
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 3, Oral
Skin irritation, Category 2
Skin sensitization, Category 1
Eye irritation, Category 2
Germ cell mutagenicity, Category 1B
Carcinogenicity, Category 2
Reproductive toxicity, Category 2
Specific target organ toxicity â repeated exposure, Category 2
Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 2
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H301 Toxic if swallowed
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H319 Causes serious eye irritation
H340 May cause genetic defects
H351 Suspected of causing cancer
H361 Suspected of damaging fertility or the unborn child
H411 Toxic to aquatic life with long lasting effects
Precautionary statement(s) Prevention P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P272 Contaminated work clothing should not be allowed out of the workplace.
P203 Obtain, read and follow all safety instructions before use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
Response P301+P316 IF SWALLOWED: Get emergency medical help immediately.
P321 Specific treatment (see ... on this label).
P330 Rinse mouth.
P302+P352 IF ON SKIN: Wash with plenty of water/...
P332+P317 If skin irritation occurs: Get medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P333+P317 If skin irritation or rash occurs: Get medical help.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P318 IF exposed or concerned, get medical advice.
P319 Get medical help if you feel unwell.
P391 Collect spillage.
Storage P405 Store locked up.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
PRECAUTIONS FOR "CARCINOGENS": Storage site should be as close as practical to lab in which carcinogens are to be used, so that only small quantities required for ... expt need to be carried. Carcinogens should be kept in only one section of cupboard, an explosion-proof refrigerator or freezer (depending on chemicophysical properties ...) that bears appropriate label. An inventory ... should be kept, showing quantity of carcinogen & date it was acquired ... Facilities for dispensing ... should be contiguous to storage area. Chemical Carcinogens
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Seller Information
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Business Type:
Trader
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Main Products:
Intermediates,Building blocks,API,Silicones,Peptides,Lab chemicals
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Location:
Room A, 23rd Floor, No. 609 Yan'an Road, Gongshu District, Hangzhou, Zhejiang
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Payment Terms:
TT against copy of documents,D/P,L/C
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Average lead Time:
5
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Total Annual Revenue:
Above $100 million
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Year of Establishment:
2020
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Certifications:
ISO
">Company ProfileLEAPChem is a specialized fine chemical supplier for research, development and production.
LEAPChem provides nearly 200,000 rare and innovative chemical products to support the evolving needs of our customers in research & bulk manufacturing activities.
As a highly customer-oriented enterprise, we are committed to providing high-quality customer services and products to our global customers in a cost-effective and efficient manner.
Our client list includes many major pharmaceutical and science companies, universities, research institutions and chemical catalogue companies.
Methodology: Sound & Stable; Active & Innovative.
Attitude: Conscientious; Ingenious.
Goals: Customer's Satisfaction
We regard client's success as our success.
At LEAPChem, we strive to be the preferred supplier for efficiency increasing and cost lowering in your Research & Production.
To achieve this strategic vision, we always push ourselves to exceed our customer's requirement. By focusing on the aim of 'Beyond Your Expectation', we continually expand our product lines, and enhance our systematic management and human resources.
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