ISO 787-4:1981
Current
The latest, up-to-date edition.
General methods of test for pigments and extenders — Part 4: Determination of acidity or alkalinity of the aqueous extract
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English, French
01-09-1981
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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 (ISO 787-3:2000) |
| EN ISO 2495:2000 | Iron blue pigments - Specifications and methods of test (ISO 2495:1995) |
| 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 |
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