fulminic acid

Học thuật

Thân thiện

A chemist carefully handles a vial of fulminic acid in the laboratory.

Definition

Noun: * An unstable, highly explosive chemical compound with the formula HCNO. It is an isomer of cyanic acid, meaning both compounds have the same atoms but arranged in a different structure, leading to vastly different properties. Fulminic acid itself is not typically isolated; it is primarily known and studied in the form of its explosive salts (fulminates) and esters.

Usage

The term is used almost exclusively in technical, chemical, and historical scientific contexts to refer to this specific, hazardous compound.
It is often mentioned in contrast to its isomer, cyanic acid, to illustrate how molecular structure affects chemical behavior.
The word fulminic derives from Latin , meaning "lightning," reflecting the compound's explosive nature.

Examples

In a chemistry textbook: "Fulminic acid is highly unstable and dangerous, whereas its isomer, cyanic acid, is more stable."
In a historical context: "The discovery of fulminic acid and its salts, like mercury fulminate, was pivotal in the development of percussion caps and detonators."
Describing properties: "The extreme sensitivity of fulminic acid salts makes them useful as primary explosives."

Advanced Usage

The concept of isomerism is central to understanding fulminic acid. It is the fulminate isomer of the formula HCNO.
In advanced organic chemistry, its structure is often discussed as H–C≡N⁺–O⁻ (a nitrile oxide), which is responsible for its high energy and instability.

Variants and Related Words

Fulminate (noun): A salt or ester of fulminic acid (e.g., silver fulminate, mercury fulminate). These are the practical, explosive compounds derived from it.
Fulminate (verb): To express vehement protest, deriving from the same Latin root () and metaphorically evoking an explosive outburst.
Cyanic acid (noun): The stable isomer of fulminic acid, with the formula HOCN.

Synonyms

There are no direct common-language synonyms for this precise chemical compound. In highly technical contexts, it may be referred to by its formula (HCNO) or described as the fulminate isomer of HCNO.

Related Phrases/Idioms

There are no idioms or common phrasal verbs using "fulminic acid." The related verb "to fulminate against" shares an etymological root but is used in a completely different (rhetorical) context.

A chemist carefully handles a vial of fulminic acid in the laboratory.

Noun

(CNOH) an unstable acid occurring mainly in the form of explosive salts and esters that is isomeric with cyanic acid