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GB/T 1664-1995Plasticizers - Determination of colour (English PDF)

增塑剂外观色度的测定

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

January 12, 1995

Implementation date

October 1, 1995

Scope

GB/T 1664-1995 is the English-translated version of 增塑剂外观色度的测定.

GB/T 1664-1995 is the Chinese standard "Plasticizers - Determination of colour". Its scope clause reads: This Standard specifies the colour determination method of plasticizers.

This Standard applies to the plasticizers, including phthalate esters, sebacic acid esters, adipic acid esters, triphenyl phosphate, tricresyl phosphate, chlorinated paraffin-52, and other transparent liquid.

Its clauses include subject contents and applicable scope; principle; definition; reagents; instruments; analysis steps; allowable error. It was issued by the State Technical Supervision Bureau on JANUARY 12, 1995 and took effect on OCTOBER 1, 1995.

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Document preview — GB/T 1664-1995

1 Subject contents and applicable scope3
2 Principle3
3 Definition3
4 Reagents3
5 Instruments3
6 Analysis steps5
7 Allowable error6

1 Subject contents and applicable scope

This Standard specifies the colour determination method of plasticizers.

2 Principle

USE visual method to compare the sample colour with the standard colour. EXPRESS the results in unit of "platinum-cobalt colour".

3 Definition

Unit of platinum-cobalt colour. The solution colour refers to the colour shown when there are 1mg of platinum in the form of chloroplatinic acid and 2mg of cobalt chloride hexahydrate in per liter of solution.

4 Reagents

4.1 Cobalt chloride (GB/T 1270). CoCl2 . 6H2O, analytical reagent;

4.2 Potassium chloroplatinate. Analytical reagent.

4.3 Hydrochloric acid (GB/T 622). Analytical reagent.

4.4 Distilled water. Redistilled water.

5 Instruments

5.1 Colorimetric tube. 100mL and 50mL colorless colorimetric tubes with ground-glass stoppers. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.

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