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295507

Sigma-Aldrich

Chloromethane

≥99.5%

Synonym(s):

Methyl chloride

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About This Item

Empirical Formula (Hill Notation):
CH3Cl
CAS Number:
74-87-3
Molecular Weight:
50.49
Beilstein:
1696839
EC Number:
200-817-4
MDL number:
MFCD00000872
UNSPSC Code:
12142100
PubChem Substance ID:
24857791
NACRES:
NA.22
Pricing and availability is not currently available.

vapor density

1.74 (vs air)

Quality Level

200

vapor pressure

3796 mmHg ( 20 °C)

Assay

≥99.5%

autoignition temp.

1169 °F

expl. lim.

19 %

bp

−24.2 °C (lit.)

mp

−97 °C (lit.)

solubility

water: soluble 5.32 g/L at 25 °C

density

0.915 g/mL at 25 °C (lit.)

functional group

alkyl halide
chloro

SMILES string

CCl

InChI

1S/CH3Cl/c1-2/h1H3

InChI key

NEHMKBQYUWJMIP-UHFFFAOYSA-N

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General description

Conversion of chloromethane over metal-exchanged zeolite ZSM-5 catalyst with alkaline earth metals and some transition metals has been studied[1]. Chloromethane has been reported as chemical intermediate during the production of gasoline from methane. Catalytic conversion of chloromethane over HSAPO-34 to light olefins has been studied by in situ FTIR spectroscopy and catalytic testing[2]. Chloromethane is a gaseous natural product implicated in methylation processes in PheUinus pomaceus[3]. Chloromethane acts as methyl donor in veratryl alcohol biosynthesis in the lignin-degrading fungi[3].

Packaging

Supplied in a Sure/Pac™ cylinder and has a brass needle valve with a male 1/4" NPTF outlet thread installed. Before using the cylinder, ensure that the valve is closed, then remove the galvanized steel hex cap that seals the outlet valve.

Compatible with the following:

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

also commonly purchased with this product

Product No.
Description
Pricing

hose barb

Product No.
Description
Pricing

Z146811

Hose adapter, brass

recommended

Product No.
Description
Pricing

regulator

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Carc. 2 - Flam. Gas 1B - Ozone 1 - Press. Gas Liquefied gas - Repr. 2 - STOT RE 2 Inhalation

Target Organs

Central nervous system,Liver,Urogenital tract

Storage Class Code

2A - Gases

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SHBP8835
SHBM9611
STBJ2474
SHBK6571
STBH1445

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D B Harper et al.
Applied and environmental microbiology, 56(11), 3450-3457 (1990-11-01)
Chloromethane, a gaseous natural product implicated in methylation processes in Phellinus pomaceus, has been shown to act as methyl donor in veratryl alcohol biosynthesis in the lignin-degrading fungi Phanerochaete chrysosporium, Phlebia radiata, and Coriolus versicolor, none of which released detectable
Conversion of chloromethane over metal-exchanged ZSM-5 to higher hydrocarbons.
Lersch P and Bandermann F.
Applied Catalysis, 75(1), 133-152 (1991)
Highly efficient catalytic conversion of chloromethane to light olefins over HSAPO-34 as studied by catalytic testing and in situ FTIR.
Wei Y, et al.
J. Catal., 238(1), 46-57 (2006)
Xiaofeng Tang et al.
The Journal of chemical physics, 136(3), 034304-034304 (2012-01-28)
Utilizing threshold photoelectron-photoion coincidence (TPEPICO) velocity imaging, dissociation of state-selected CH(3)Cl(+) ions was investigated in the excitation energy range of 11.0-18.5 eV. TPEPICO time-of-flight mass spectra and three-dimensional time-sliced velocity images of CH(3)(+) dissociated from CH(3)Cl(+)(A(2)A(1) and B(2)E) ions were
Shinji Aono et al.
Journal of computational chemistry, 31(16), 2924-2931 (2010-07-06)
Free energy profiles for the proton transfer reactions in hydrogen-bonded complex of phenol with trimethylamine in methyl chloride solvent are studied with the reference interaction site model self-consistent field method. The reactions in both the electronic ground and excited states
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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