technical-grade

Thân thiện

A chemist pours technical-grade sulfuric acid into a beaker.

Definition

Adjective: - Of a grade suitable for industrial or technical use, rather than pure or analytical use: Describes a chemical substance that contains small amounts of other chemicals or impurities, making it less pure than analytical-grade or reagent-grade material. It is considered suitable for applications where high purity is not critical, such as in manufacturing, cleaning, or other industrial processes.

Usage

This adjective is used specifically to classify and describe the purity level of chemical compounds and materials. It is typically placed before the noun it modifies. - The technical-grade solvent is adequate for cleaning machinery. - Always check if the procedure requires reagent-grade or technical-grade acid.

Examples

• For large-scale metal etching, they purchased technical-grade nitric acid.
• Technical-grade sodium chloride is often used for de-icing roads.
• The cost difference between technical-grade and pharmaceutical-grade ingredients is significant.

Advanced Usage

• The term is often hyphenated when used as a compound modifier before a noun (e.g., technical-grade material). It may sometimes be seen without a hyphen in more informal contexts or after the noun (e.g., The acid was technical grade).
• It is part of a standard purity classification system for chemicals, which may include grades like , , , (American Chemical Society), and (United States Pharmacopeia).

Variants and Related Words

• Technical grade (noun phrase): The grade or classification itself.
  • This compound is available in technical grade.
• Industrial-grade (adj): Very similar in meaning, often used interchangeably, though it may sometimes imply a focus on large-scale manufacturing applications.
• Reagent-grade (adj): Denoting a high-purity chemical suitable for analysis and laboratory work.
• ACS-grade (adj): Denoting a chemical that meets the strict purity standards set by the American Chemical Society.

Synonyms

• Industrial-grade
• Commercial-grade
• Non-analytical grade

Antonyms

• Analytical-grade
• Reagent-grade
• Pure
• USP-grade

Học thuật

Adjective

1. containing small amounts of other chemicals, hence slightly impure
   • technical-grade sulfuric acid

Từ đồng nghĩa

• technical grade