Word.ws English Dictionary

methylchloroisothiazolinone

/ˌmɛθɪlˌklɔːɹəʊˌaɪsəʊˌθaɪəˈzəʊlɪnəʊn/

methylchloroisothiazolinone noun: a synthetic preservative used in many cosmetics, personal care products and cleaners to stop bacteria, mold and fungi. It is effective at very low concentrations but is also a known cause of skin irritation and allergic contact dermatitis in some people. It is often used together with methylisothiazolinone.

methylchloroisothiazolinone: a synthetic preservative used in many cosmetics, personal care products and cleaners to stop...
Image: Mysid, Public domain, via Wikimedia Commons

Noun

methylchloroisothiazolinone (uncountable, abbreviation MCI)

  1. A synthetic preservative used in many cosmetics, personal care products and cleaners to stop bacteria, mold and fungi. It is effective at very low concentrations but is also a known cause of skin irritation and allergic contact dermatitis in some people. It is often used together with methylisothiazolinone.

Forms of methylchloroisothiazolinone

abbreviationMCI

Origin of methylchloroisothiazolinone

From methyl + chloro- + isothiazolinone

Questions about methylchloroisothiazolinone

What does methylchloroisothiazolinone mean?
Methylchloroisothiazolinone means a synthetic preservative used in many cosmetics, personal care products and cleaners to stop bacteria, mold and fungi. It is effective at very low concentrations but is also a known cause of skin irritation and allergic contact dermatitis in some people. It is often used together with methylisothiazolinone.
What part of speech is methylchloroisothiazolinone?
Methylchloroisothiazolinone is a noun.
How do you pronounce methylchloroisothiazolinone?
Methylchloroisothiazolinone is pronounced /ˌmɛθɪlˌklɔːɹəʊˌaɪsəʊˌθaɪəˈzəʊlɪnəʊn/.

Words near methylchloroisothiazolinone in the dictionary

  1. methylcellulose
  2. methylcelluloses
  3. methylcephaeline
  4. methylchavicol
  5. methylchloroform
  6. methylchloroisothiazolinone
  7. methylchlorophenoxypropionic acid
  8. methylcholanthrene
  9. methylcholanthrenes
  10. methylcinnoline
  11. methylcinnolines

Source and license

Adapted from Wiktionary: methylchloroisothiazolinone (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-methylchloroisothiazolinone.wav.

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