hydrogen peroxide
B2Technical/Scientific, Everyday
Definition
Meaning
A chemical compound (H₂O₂), a clear liquid with strong oxidizing properties, commonly used as a disinfectant, bleach, or propellant.
Beyond its common uses, it is a chemical intermediate in industrial processes, a component in rocket propulsion, and a reagent in chemistry laboratories. It is also found in low concentrations in some biological systems.
Linguistics
Semantic Notes
Typically treated as a mass noun. In layman's terms, it is most often associated with a common household antiseptic. It decomposes into water and oxygen, a property central to its applications.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Pronunciation differences follow standard BrE/AmE patterns for 'hydrogen'.
Connotations
Identical; primarily associated with medical/cleaning use or chemistry.
Frequency
Equally common in both variants within relevant contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
use [hydrogen peroxide] on [surface/wound]mix [hydrogen peroxide] with [substance]dilute [hydrogen peroxide] to [percentage]apply [hydrogen peroxide] to [object]Vocabulary
Synonyms
Neutral
Weak
Usage
Context Usage
Business
In manufacturing, hydrogen peroxide is a key bleaching agent for paper and textiles.
Academic
The catalytic decomposition of hydrogen peroxide is a classic chemistry demonstration.
Everyday
I used a bit of hydrogen peroxide to clean the cut.
Technical
The monopropellant thruster utilises 90% grade hydrogen peroxide.
Examples
By Part of Speech
verb
British English
- The wound needs to be peroxided to prevent infection.
American English
- She peroxided her hair to get that blonde look.
adjective
British English
- The hydrogen-peroxide solution was kept in a brown bottle.
American English
- We followed a hydrogen-peroxide propulsion test protocol.
Examples
By CEFR Level
- We clean small cuts with hydrogen peroxide.
- You can find hydrogen peroxide in the first aid section of the chemist's.
- The hairdresser warned that using hydrogen peroxide too often can damage your hair.
- The lab experiment demonstrated the exothermic decomposition of hydrogen peroxide catalysed by manganese dioxide.
Learning
Memory Aids
Mnemonic
Think: 'Hydrogen Peroxide' = 'Water (H₂O) with an Extra Oxygen' (O₂), making it a more powerful, oxidizing agent.
Conceptual Metaphor
A RELEASED AGENT (It releases oxygen to clean, bleach, or propel).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate as 'перекись водорода' in contexts where the specific compound is not meant; it is not a generic term for 'antiseptic'.
- Avoid calquing the structure 'водородная перекись' as it is incorrect; the established term is 'перекись водорода'.
Common Mistakes
- Incorrectly treating it as a countable noun (e.g., 'a hydrogen peroxide').
- Confusing it with 'hydrogen' or 'peroxide' as separate entities.
- Misspelling as 'hydrogen peroxyde'.
Practice
Quiz
What is the primary reason hydrogen peroxide is stored in dark bottles?
FAQ
Frequently Asked Questions
No. Food-grade dilute solutions exist, but ingestion of typical household concentrations is dangerous and can cause internal burns.
The bubbling is the release of oxygen gas as the peroxide breaks down upon contact with the enzyme catalase present in blood and tissue.
Water is H₂O. Hydrogen peroxide is H₂O₂, containing an extra oxygen atom, which makes it a reactive, unstable compound that acts as an oxidizer.
Yes, it is the active bleaching agent in many hair lighteners, though it can damage hair if used improperly.