ISO 7099:1983 PDF
Phosphoric acid for industrial use (including foodstuffs) — Determination of hydrogen sulfide content — Titrimetric method
Open preview (PDF)Phosphoric acid for industrial use (including foodstuffs) — Determination of hydrogen sulfide content — Titrimetric methodTitle (English):
ISO 7099:1983
Phosphoric acid for industrial use (including foodstuffs) — Determination of hydrogen sulfide content — Titrimetric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 4
- Publication date:
- October 1, 1983
- Edition:
- ISO IS 7099 edition 1 version 1
- ICS:
- 67.220.20
Description (English):
The hydrogen sulphide in a test portion is removed in a stream of nitrogen and absorbed in a solution of sodiumhydroxide in aqueous acetone. the sulphide ions are titrated with standard volumetric mercury(II) acetate solution, in the presence of 1,5-diphenylthiocarbazone (dithizone) as indicator. The method is applicable to products having hydrogen sulfide contents greater than or equal to 0.05 mg/kg.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 7099:1983
