dichloromethane: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “dichloromethane” mean?
A volatile, colourless organic chemical compound with the formula CH₂Cl₂, used primarily as a solvent.
Audio
Pronunciation
Definition
Meaning and Definition
A volatile, colourless organic chemical compound with the formula CH₂Cl₂, used primarily as a solvent.
A chlorinated hydrocarbon solvent, also known as methylene chloride, valued for its low boiling point, ability to dissolve many organic compounds, and historical use in paint stripping, decaffeination, and chemical synthesis.
Dialectal Variation
British vs American Usage
Differences
No significant lexical difference. Spelling, pronunciation, and meaning are identical. The substance is regulated under similar safety protocols in both regions.
Connotations
Identical connotations of hazard, volatility, and industrial use in both dialects.
Frequency
Equally rare outside scientific and industrial contexts in both the UK and US.
Grammar
How to Use “dichloromethane” in a Sentence
[verb] + dichloromethane (e.g., evaporate, distil, condense)dichloromethane + [verb] + [object] (e.g., dichloromethane dissolves lipids)[preposition] + dichloromethane (e.g., in dichloromethane, with dichloromethane)Vocabulary
Collocations
Examples
Examples of “dichloromethane” in a Sentence
adjective
British English
- The dichloromethane layer was separated.
- A dichloromethane-based adhesive.
American English
- The dichloromethane layer was separated.
- A dichloromethane-based adhesive.
Usage
Meaning in Context
Business
Rare, except in chemical supply, pharmaceutical, or manufacturing sectors discussing solvent procurement, costs, or regulatory compliance.
Academic
Common in chemistry, biochemistry, and chemical engineering research papers, lab protocols, and safety documentation.
Everyday
Virtually never used. A layperson might encounter it on a safety data sheet for a paint stripper.
Technical
The primary register. Used precisely in laboratory manuals, industrial process descriptions, and hazardous material regulations.
Vocabulary
Synonyms of “dichloromethane”
Vocabulary
Antonyms of “dichloromethane”
Watch out
Common Mistakes When Using “dichloromethane”
- Misspelling as 'dichloromethan' (dropping the 'e').
- Incorrect pronunciation stressing the first syllable (/ˈdaɪklor.../).
- Confusing it with chloroform (CHCl₃) or carbon tetrachloride (CCl₄).
FAQ
Frequently Asked Questions
Yes, they are two names for the same chemical compound (CH₂Cl₂). 'Methylene chloride' is a common industrial name, while 'dichloromethane' is the systematic IUPAC name.
It is prized for its ability to dissolve a wide range of organic compounds, its relatively low boiling point (40°C) which allows for easy removal, and its immiscibility with water, facilitating liquid-liquid extractions.
It is not globally banned, but its use in consumer products like paint strippers is heavily restricted or banned in many countries (e.g., the EU, USA) due to its toxicity. Industrial and laboratory use continues under strict safety controls.
Evacuate the area, ensure ventilation, wear appropriate personal protective equipment (PPE), and contain the spill with inert absorbent material. It should be cleaned up promptly as it evaporates quickly, creating hazardous vapours.
A volatile, colourless organic chemical compound with the formula CH₂Cl₂, used primarily as a solvent.
Dichloromethane is usually technical/scientific in register.
Dichloromethane: in British English it is pronounced /ˌdaɪˌklɔːrəʊˈmiːθeɪn/, and in American English it is pronounced /ˌdaɪˌklɔːroʊˈmiːθeɪn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Di-CHLORO-methane: 'Di' means two, 'chloro' hints at chlorine atoms, and 'methane' is the simple carbon base. Think: a methane molecule with two chlorines.
Conceptual Metaphor
Often conceptualised as a 'workhorse solvent' or a 'hazardous tool' in the chemist's toolkit.
Practice
Quiz
What is the primary safety concern associated with dichloromethane?