GOST 6691-1977
Reagents. Urea. Specifications

Standard No.

GOST 6691-1977

Release Date

1977

Published By

RU-GOST R

Latest

GOST 6691-1977

Replace

GOST 6691-1967

Scope

This standard applies to the reagent - urea, which is colorless crystals or white crystalline

GOST 6691-1977 Referenced Document

• GOST 10555-1975 Reagents and high-purity matters. Colorimetric methods for determination of iron
• GOST 10671.5-1974 Reagents. Methods for the determination of sulfates
• GOST 10671.7-1974 Reagents. Methods for the determination of chlorides
• GOST 14192-1996 Marking of cargoes*， 1996-04-18 Update
• GOST 1625-1989 Formalin for industrial use. Specifications*， 1989-04-18 Update
• GOST 17319-1976 Reagents. Methods for the determination of heavy metals
• GOST 1770-1974 Laboratory volumetric glassware. Cylinders, beakers, measuring flasks, test tubes. General specifications
• GOST 18300-1987 Technical rectified ethyl alcohol. Specifications*， 1987-04-18 Update
• GOST 18995.4-1973 Organic chemical products. Methods for determination of melting point interval*， 2024-04-18 Update
• GOST 19433-1988 Dangerous goods. Classification and marking*， 1988-04-18 Update
• GOST 19908-1990 Transparent quartz glass crucibles, basins, cups, flasks, funnels, test-tubes and caps. General specifications*， 1990-04-18 Update
• GOST 24104-1988 General purpose laboratory balances and comparison balances. Performance. Specifications*， 1988-04-18 Update
• GOST 25336-1982 Laboratory glassware and equipment. Basic parameters and dimensions*， 1982-04-18 Update
• GOST 25794.1-1983 Reagents. Methods of preparation of standard volumetric solutions for acid-base titration*， 1983-04-18 Update
• GOST 27025-1986 Reagents. General test requirements*， 1986-04-18 Update
• GOST 27184-1986 Reagents. Determination of residue on ignition*， 1986-04-18 Update
• GOST 3118-1977 Reagents. Hydrochloric acid. Specifications
• GOST 4165-1978 Reageuts. Copper II sulphate pentahydrate. Specifications*， 1978-04-18 Update
• GOST 4204-1977 Reagents. Sulphuric acid. Specifications
• GOST 4232-1974 Reagents. Potassium iodide. Specifications
• GOST 4328-1977 Reagents. Sodium hydroxide. Specifications
• GOST 4517-1987 Reagents. Methods for preparation of accessory reagents and solutions used for analysis*， 1987-04-18 Update
• GOST 4919.1-1977 Reagents and matters of special purity. Methods for preparation of indicators solutions
• GOST 5845-1979 Reagents. Potassium-sodium tartrate 4-aqueous. Specifications*， 1979-04-18 Update
• GOST 6563-1975 Technical articles made of noble metals and their alloys. Specifications
• GOST 6709-1972 Distilled water. Specifications

GOST 6691-1977 history

• 1977 GOST 6691-1977 Reagents. Urea. Specifications
• 0000 GOST 6691-1967