methoxide: meaning, definition, pronunciation and examples
C2 (Highly Specialized)Technical/Scientific
Quick answer
What does “methoxide” mean?
The conjugate base of methanol (CH₃O⁻) or a salt containing this anion.
Audio
Pronunciation
Definition
Meaning and Definition
The conjugate base of methanol (CH₃O⁻) or a salt containing this anion.
In practical chemistry, often refers to sodium methoxide (CH₃ONa) or potassium methoxide (CH₃OK), strong bases and nucleophiles used in organic synthesis and industrial processes.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or grammatical differences. Spelling and usage are identical in technical contexts.
Connotations
Purely technical term with no regional connotative differences.
Frequency
Equally low-frequency and specialized in both varieties, confined to chemistry, engineering, and related academic/industrial fields.
Grammar
How to Use “methoxide” in a Sentence
[substance] is treated with methoxide[reaction] is catalyzed by methoxide[base] such as methoxideVocabulary
Collocations
Examples
Examples of “methoxide” in a Sentence
adjective
British English
- The methoxide-catalysed reaction was complete in under an hour.
- A methoxide solution in methanol is highly corrosive.
American English
- The methoxide-catalyzed reaction was complete in under an hour.
- A methoxide solution in methanol is highly corrosive.
Usage
Meaning in Context
Business
In supply chain or logistics for chemical suppliers; e.g., 'The plant requires a monthly shipment of sodium methoxide.'
Academic
In research papers and textbooks describing organic reaction mechanisms; e.g., 'Ester hydrolysis proceeded under basic conditions using potassium methoxide.'
Everyday
Virtually never used.
Technical
Standard term in laboratory procedures, chemical engineering specifications, and safety data sheets (SDS).
Vocabulary
Synonyms of “methoxide”
Strong
Neutral
Weak
Vocabulary
Antonyms of “methoxide”
Watch out
Common Mistakes When Using “methoxide”
- Using 'methoxide' to refer to methanol itself.
- Omitting the metal cation when it is relevant (e.g., saying 'add methoxide' instead of 'add sodium methoxide').
- Misspelling as 'methoxyde'.
FAQ
Frequently Asked Questions
No. Methanol (CH₃OH) is the parent alcohol. Methoxide (CH₃O⁻) is its conjugate base, typically encountered as a salt like CH₃ONa.
It's primarily used as a strong base and nucleophile in organic synthesis (e.g., esterifications, Claisen condensations) and industrially in biodiesel production.
Salts like sodium methoxide are hygroscopic and react violently with atmospheric moisture and carbon dioxide, degrading their effectiveness and creating safety hazards.
Historically, 'methylate' was used, but in modern technical English, 'methoxide' is the precise and preferred IUPAC-style term. 'Methylate' can be ambiguous.
The conjugate base of methanol (CH₃O⁻) or a salt containing this anion.
Methoxide is usually technical/scientific in register.
Methoxide: in British English it is pronounced /mɛθˈɒksaɪd/, and in American English it is pronounced /mɛθˈɑksaɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: METHanol + oxIDE = METHOXIDE. It's what you get when you remove a proton (H⁺) from methanol.
Conceptual Metaphor
A chemical tool or agent: 'Methoxide acts as a scaffold remover in transesterification.'
Practice
Quiz
What is the primary hazard associated with handling solid sodium methoxide?