GOST 14638.5-1981
Ferrotungsten. Method for the determination of manganese

Standard No.

GOST 14638.5-1981

Release Date

1981

Published By

RU-GOST R

Latest

GOST 14638.5-1981

Replace

GOST 14638.5-1969

Scope

This standard specifies a photometric method for determining the mass fraction of manganese in the range of 0.05 to 0.7% in ferrotungsten.

GOST 14638.5-1981 Referenced Document

• GOST 10484-1978 Reagents. Hydrofluoric acid. Specifications
• GOST 20490-1975 Reagents. Potassium permanganate. Specifications
• GOST 4197-1974 Reagents. Sodium nitrite. Specifications
• GOST 4204-1977 Reagents. Sulphuric acid. Specifications
• GOST 4461-1977 Reagents. Nitric acid. Specifications
• GOST 6552-1980 Reagents. Orthophosphoric acid. Specifications

GOST 14638.5-1981 history

• 1981 GOST 14638.5-1981 Ferrotungsten. Method for the determination of manganese
• 0000 GOST 14638.5-1969