Published July 1978
| Version v1
Journal article
2,3,4-trihydroxy-4'-sulfo-azobenzene as a new reagnet for photometric determination of molybdenum (6)
Description
2,3,4-trihydroxy-4'-sulpho-azobenzene (TSAB) has been synthesized. Its dissociation constants have been determined potentiometrically: K1=(0.036+-0.07)x10-5, K2=(0.91+-0.04)x10-7; K3=(0.83+-0.05)x10-9. Molybdenum (6) reacts with TSAB to form a coloured compound which can be used for photometric determination. The complex yield is maximum at pH 2 and 5, lambdasub(max)=460nm, Mo:R=1:2. The molar absorptivities at pH 2 and 5 (460 nm) are 1.85x104 and 2.5x104 respectively. The reaction selectivity has been examined. Procedures have been developed of determining molybdenum(6) in pure salts, model mixtures, town water, soil
Additional details
Additional titles
- Original title (Russian)
- 2,3,4-триокиси-4ь-сульфо-азобензол-новый реагент для фотометрического определения молибдена(6)
Publishing Information
- Journal Title
- Zh. Anal. Khim.
- Journal Volume
- 33
- Journal Issue
- 7
- Series
- Zh. Anal. Khim.
- Journal Page Range
- 1343-1346
INIS
- Country of Publication
- USSR
- Country of Input or Organization
- USSR
- INIS RN
- 9413669
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- AROMATICS; AZO COMPOUNDS; CHEMICAL PREPARATION; HYDROXY COMPOUNDS; MOLYBDENUM COMPLEXES; ORGANIC SULFUR COMPOUNDS; PHOTOMETRY; QUANTITATIVE CHEMICAL ANALYSIS; REAGENTS
- Descriptors DEC
- CHEMICAL ANALYSIS; COMPLEXES; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; SYNTHESIS; TRANSITION ELEMENT COMPLEXES
Optional Information
- Notes
- For English translation see the journal J. Anal. Chem. USSR.