General methods of test for pigments and extenders — Part 4: Determination of acidity or alkalinity of the aqueous extract

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

01-09-1981

Publisher

International Organization for Standardization

The principle of the method consists in the hot extraction of the material by following the procedure specified in ISO 787/3, to the stage of obtaining a perfectly clear filtrate. The determination is carried out with indicator solution (method A). If the solution with the methyl red indicator is yellow (alkaline), titrate it with the hydrochloric acid solution to an orange end-point; if the solution with the methyl red indicator is red (acid), titrate it with the sodium or potassium hydroxide solution to an orange end-point. The other method (method B) is the potentiometric determination. Take 100 ml of the test solution, insert the electrodes of the pH measuring device and read the pH value.

Committee	ISO/TC 256
DevelopmentNote	Also numbered as BS 3483-C3(1982) (07/2005)
DocumentType	Standard
Pages	2
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
UNE-EN ISO 787-4:2018	Identical
NF EN ISO 787-4 : 2017	Identical
UNI EN ISO 787-4 : 2018	Identical
PN EN ISO 787-4 : 2017	Identical
I.S. EN ISO 787-4:2017	Identical
EN ISO 787-4:2017	Identical
DIN EN ISO 787-4:2018-01	Identical
ONORM EN ISO 787-4 : 2017	Identical
SN EN ISO 787-4 : 2018	Identical
BS EN ISO 787-4:2017	Identical
SS-EN ISO 787-4 : 2017	Identical
NEN EN ISO 787-4 : 2017	Identical
NFT 30 034 : 82 FD	Similar to
DIN EN ISO 787-4 E : 2018	Identical
NEN ISO 787-4 : 1983	Identical
NS EN ISO 787-4 : 2017	Identical

BS 3483-C1:1980	Methods for testing pigments for paints. Determination of matter soluble in water hot extraction method
I.S. EN ISO 1248:2008	IRON OXIDE PIGMENTS - SPECIFICATIONS AND METHODS OF TEST
DIN EN ISO 1248:2008-06	Iron oxide pigments - Specifications and methods of test (ISO 1248:2006, including Technical Corrigendum 1:2007)
16/30335350 DC : 0	BS ISO 9298 - RUBBER COMPOUNDING INGREDIENTS - ZINC OXIDE - TEST METHODS
ISO 9298:2017	Rubber compounding ingredients — Zinc oxide — Test methods
BS 283(1995) : 1995 AMD 13110	SPECIFICATION FOR IRON BLUE PIGMENTS
BS EN ISO 787-3:2001	General methods of test for pigments and extenders Determination of matter soluble in water. Hot extraction method
ISO 2495:1995	Iron blue pigments Specifications and methods of test
EN ISO 787-3 : 2000	GENERAL METHODS OF TEST FOR PIGMENTS AND EXTENDERS - PART 3: DETERMINATION OF MATTER SOLUBLE IN WATER - HOT EXTRACTION METHOD
EN ISO 2495 : 2000	IRON BLUE PIGMENTS - SPECIFICATIONS AND METHODS OF TEST
BS 303:1991	Specification for lead chrome green pigments for paints
UNI EN ISO 1248 : 2008	IRON OXIDE PIGMENTS - SPECIFICATIONS AND METHODS OF TEST
ISO 1248:2006	Iron oxide pigments Specifications and methods of test
BS ISO 9298:2017	Rubber compounding ingredients. Zinc oxide. Test methods
BS EN ISO 1248:2008	Iron oxide pigments. Specifications and methods of test
EN ISO 1248:2008/AC:2009	IRON OXIDE PIGMENTS - SPECIFICATIONS AND METHODS OF TEST