magnesium sulfate
Medium-LowFormal, Technical, Medical
Definition
Meaning
A chemical compound (MgSO₄) that is a combination of magnesium, sulfur, and oxygen, often appearing as a white crystalline salt.
A compound widely used as a medication (e.g., to treat magnesium deficiency, pre-eclampsia, or constipation), in agriculture as a fertilizer, in baths for therapeutic purposes, and as a brewing salt.
Linguistics
Semantic Notes
The term is transparently compositional, denoting a specific inorganic salt. In most contexts, it refers to the heptahydrate form (Epsom salt). The anhydrous form is also commercially significant.
Dialectal Variation
British vs American Usage
Differences
The compound is known under the same name. In everyday contexts, the name 'Epsom salts' is equally or more common in both varieties.
Connotations
Identical connotations in both varieties; primarily technical, medical, or commercial.
Frequency
Frequency is similar, tied directly to medical, agricultural, and industrial discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
Magnesium sulfate is administered [intravenously/ orally].The solution contains [X mg/mL] of magnesium sulfate.They applied magnesium sulfate to the soil.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “N/A”
Usage
Context Usage
Business
Used in commerce for agricultural, pharmaceutical, and cosmetic products.
Academic
Common in chemistry, pharmacology, medicine, and soil science texts.
Everyday
Primarily recognized as 'Epsom salts' for bath soaks or as a laxative.
Technical
Specified by purity, hydration state (e.g., heptahydrate), and concentration in formulations.
Examples
By Part of Speech
verb
British English
- N/A (noun only)
American English
- N/A (noun only)
adverb
British English
- N/A (noun only)
American English
- N/A (noun only)
adjective
British English
- N/A (noun only)
American English
- N/A (noun only)
Examples
By CEFR Level
- You can buy magnesium sulfate at the chemist's.
- Epsom salt is another name for it.
- The doctor prescribed magnesium sulfate for the patient's deficiency.
- Farmers sometimes add this salt to improve the soil.
- Intravenous magnesium sulfate is a standard treatment for severe pre-eclampsia.
- The anhydrous form of the compound is used as a drying agent.
- The efficacy of magnesium sulfate in neuroprotection for preterm births is well-documented.
- The crystalline structure of magnesium sulfate heptahydrate was analysed using X-ray diffraction.
Learning
Memory Aids
Mnemonic
Think 'MAGic for SOIL and FEET': MAGnesium SulfATE.
Conceptual Metaphor
Often metaphorically viewed as a 'cure-all' mineral supplement or a 'relaxing agent' (in bath contexts).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Direct translation 'сульфат магния' is correct and identical in meaning. No false friends.
Common Mistakes
- Incorrect spelling: 'magnesium sulphate' (UK) vs. 'magnesium sulfate' (US) is a regional variation, not a mistake. Mistaking it for 'magnesium citrate' or other magnesium salts is a conceptual error.
Practice
Quiz
In an everyday, non-medical context, magnesium sulfate is most commonly known as:
FAQ
Frequently Asked Questions
Yes, in its common heptahydrate form used for baths and minor medicinal purposes.
Yes, in controlled doses as a saline laxative or for magnesium replenishment under medical supervision. It should not be consumed indiscriminately.
It's a spelling difference: 'sulfate' is American English, 'sulphate' is British English. Both refer to the same chemical ion (SO₄²⁻).
Yes, when used correctly as a magnesium and sulfur fertilizer, particularly for magnesium-deficient soils.