GOST 14638.3-1981
Ferrotungsten. Method for the determination of phosphorus

Standard No.

GOST 14638.3-1981

Release Date

1981

Published By

RU-GOST R

Latest

GOST 14638.3-1981

Replace

GOST 14638.3-1969

Scope

This standard specifies a photometric method for determining the mass fraction of phosphorus in the range from 0.01 to 0.15% in ferrotungsten

GOST 14638.3-1981 Referenced Document

• GOST 10484-1978 Reagents. Hydrofluoric acid. Specifications
• GOST 18300-1972 Rectified technical ethyl alcohol. Specifications
• GOST 19275-1973 Reagents. Ammonium bromide. Specifications
• GOST 24363-1980 Reagents. Potassium hydroxide. Specifications
• GOST 3118-1977 Reagents. Hydrochloric acid. Specifications
• GOST 3760-1979 Reagents. Ammonia water. Specifications
• GOST 3765-1978 Reagents. Ammonium molibdate. Specifications
• GOST 4198-1975 Reagents. Potassium dihydrogen phosphate. Specifications
• GOST 4461-1977 Reagents. Nitric acid. Specifications
• GOST 4530-1976 Reagents. Calcium carbonate. Specifications
• GOST 5456-1979 Reagents. Hydroxilamine hydrochloride. Specifications

GOST 14638.3-1981 history

• 1981 GOST 14638.3-1981 Ferrotungsten. Method for the determination of phosphorus
• 0000 GOST 14638.3-1969