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Dichloromethanedetecting-dichloromethane-factsheet

Formula: CH2CI2 | CAS: 75-09-2

Dichloromethane Detection: Dichloromethane is highly volatile and should be stored in a cool, dry area in tightly closed, labeled containers. This chemical needs to be kept away from metals, light, and any source of heat or ignition.

Dichloromethane Detection within The Industry Sector

Dichloromethane is used in many industries. It is used in paint removing, degreasing and cleaning, and manufacturing Some examples of workers at risk of being exposed to methylene chloride include the following:

  • Bathtub refinishers exposed to glazing fumes
  • Workers who use paint stripping products
  • Factories workers involved in metal cleaning and degreasing
  • Employees who work in pharmaceutical manufacturing

To prevent worker fatalities when using methylene chloride paint stripping products, OSHA advises employers to:

  • Perform monitoring and air sampling to determine exposure to methylene chloride.
  • Establish and implement a respiratory protection program.
  • Provide adequate ventilation (bathroom fans or open windows are not considered adequate).
  • Provide and maintain effective engineering and work practice controls.
  • Provide and enforce the use of proper personal protective equipment.
  • Provide essential methylene chloride hazard training to workers.
    – Safety & Health Magazine

Health risks associated with dichloromethane

Dichloromethane evaporates easily producing high concentrations of
vapor, particularly in confined spaces or where ventilation is inadequate. It has also been classified as a Category 3 carcinogen in the European Community. Under the Chemicals (Hazard Information and Packaging) (CHIP) Regulations, it has the risk phrase R40 ‘Possible risk of irreversible effects’.

Note: Category 3 substances under the CHIP Regulations are those which give cause for concern, owing to possible carcinogenic effects, but in respect of which the information available is not adequate for making a satisfactory assessment.

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Gas Fact Sheet

Everything You Need to Know about Detecting Dichloromethane

Our Gas Fact Sheets, which is available to download below, provides you with key information on the exposure limits and the locations where potentially harmful gases can occur. We also share information on gas detection monitoring techniques and equipment that can help you manage gas detection in the workplace, for worker and site safety.

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Dichloromethane Detection

Formula: CH2CI2 | CAS: 75-09-2

Synonyms: dichloromethane, R30, methylene chloride, Aerothene MM, methylene dichloride, Narkotil, R30, Solaesthin, Solmethine, DCM, methane dichloride, methylene bichloride, NCI-C50102, UN 1593, freon 30, hcc 30, khladon 30, solaesthin

Specification Value/Information
Formula CH2Cl2
CAS no. 75-09-2
Gas Response Factor, 11.7 eV 1.00
Gas Response Factor, 10.6 eV 70.00
Gas Response Factor, 10.0 eV ZR
ppm per mg/m⁻³, (20 °C, 1 bar) 0.283
Molecular Weight, g/mole 84.9
Melting point, °C -97
Boiling point, °C 40
Upper Explosive Limit, % 22
Specification Value/Information
Lower Explosive Limit, % 13
Density, g.cm⁻³ 1.325
Ionisation Energy, eV 11.32
EH40 TWA, ppm 100
EH40 TWA, mg.m⁻³ 353
EH40 STEL, ppm 200
EH40 STEL, mg.m⁻³ 706
NIOSH IDLH, ppm 2500
OSHA TWA PEL, ppm 25

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