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sklademVydáno: 1989-08-31
BS 6829-4.2:1989
Analysis of surface active agents (raw materials). Ethylene oxide adducts Method for determination of polyethylene glycols and non-ionic active matter contents
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| Označení normy: | BS 6829-4.2:1989 |
| Počet stran: | 12 |
| Vydáno: | 1989-08-31 |
| ISBN: | 0 580 17444 1 |
| Status: | Standard |
DESCRIPTION
BS 6829-4.2:1989
This standard BS 6829-4.2:1989 Analysis of surface active agents (raw materials). Ethylene oxide adducts is classified in these ICS categories:
- 71.100.40 Surface active agents
This International Standard specifies a method for the determination of polyethylene glycols and non-ionic active matter (adducts) in fatty alcohol and alkylphenol polyoxyethylate derivatives.
Generally the commercial products contain polyethylene glycols as a by-product. The Weibull method allows the determination of both the non-ionic active matter (adducts) and the polyethylene glycols impurity.
Dissolution in ethyl acetate followed by extraction and gravimetric determination. Applicable to all non-ionic agents containing from 2 to 80 oxyethylene groups per molecule.