GOST 21138.8-1978
Chalk. Method for determination of iron oxide mass fraction

Standard No.

GOST 21138.8-1978

Release Date

1978

Published By

RU-GOST R

Latest

GOST 21138.8-1978

Replace

GOST 13146-1967

Scope

This standard applies to natural chalk and establishes a photocolorimetric method for determining the iron oxide content

GOST 21138.8-1978 Referenced Document

• GOST 21138.0-1985 Chalk. General requirements for methods of analysis*， 1985-04-19 Update
• GOST 21138.5-1978 Chalk. Method for determination of calcium carbonate and magnesium carbonate mass fraction
• GOST 3118-1977 Reagents. Hydrochloric acid. Specifications
• GOST 3760-1979 Reagents. Ammonia water. Specifications*， 1979-04-19 Update
• GOST 4204-1977 Reagents. Sulphuric acid. Specifications
• GOST 4478-1978 Reagents. Sulphosalicylic acid, 2-aqueous. Specifications

GOST 21138.8-1978 history

• 1978 GOST 21138.6-1978 Chalk. Method for determination of insoluble in hydrochloric acid residue mass fraction
• 0000 GOST 13146-1967