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GB/T 1664-1995 English PDF (GBT1664-1995)
GB/T 1664-1995 English PDF (GBT1664-1995)
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GB/T 1664-1995: Plasticizers - Determination of colour
GB/T 1664-95
GB
UDC 678.049.535.65
G 70
National Standard
of the People’s Republic of China
Replacing GB 1664-81
GB 1673-81
Plasticizers – Determination of colour
ISSUED ON. JANUARY 12, 1995
IMPLEMENTED ON. OCTOBER 1, 1995
Issued by. State Technical Supervision Bureau
Table of Contents
1 Subject contents and applicable scope ... 3
2 Principle... 3
3 Definition ... 3
4 Reagents ... 3
5 Instruments ... 3
6 Analysis steps ... 5
7 Allowable error ... 6
Additional information... 7
Plasticizers – Determination of colour
This Standard equivalently adopts the international standard ISO 2211.1973
“Liquid chemical products – Measurement of colour in Hazen units (platinum-
cobalt scale)”.
1 Subject contents and applicable scope
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.
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.
Additional information.
This Standard was proposed by the Ministry of Chemical Industry of the
People’s Republic of China.
This Standard shall be under the jurisdiction of the Shanxi Chemical Research
Institute.
The responsible drafting organization of this Standard is Shanxi Chemical
Research Institute.
The main drafter of this Standard is Zou Zhiwen.
Get QUOTATION in 1-minute: Click GB/T 1664-1995
Historical versions: GB/T 1664-1995
Preview True-PDF (Reload/Scroll if blank)
GB/T 1664-1995: Plasticizers - Determination of colour
GB/T 1664-95
GB
UDC 678.049.535.65
G 70
National Standard
of the People’s Republic of China
Replacing GB 1664-81
GB 1673-81
Plasticizers – Determination of colour
ISSUED ON. JANUARY 12, 1995
IMPLEMENTED ON. OCTOBER 1, 1995
Issued by. State Technical Supervision Bureau
Table of Contents
1 Subject contents and applicable scope ... 3
2 Principle... 3
3 Definition ... 3
4 Reagents ... 3
5 Instruments ... 3
6 Analysis steps ... 5
7 Allowable error ... 6
Additional information... 7
Plasticizers – Determination of colour
This Standard equivalently adopts the international standard ISO 2211.1973
“Liquid chemical products – Measurement of colour in Hazen units (platinum-
cobalt scale)”.
1 Subject contents and applicable scope
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.
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.
Additional information.
This Standard was proposed by the Ministry of Chemical Industry of the
People’s Republic of China.
This Standard shall be under the jurisdiction of the Shanxi Chemical Research
Institute.
The responsible drafting organization of this Standard is Shanxi Chemical
Research Institute.
The main drafter of this Standard is Zou Zhiwen.
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