GB1095977A - Methods of measuring phosphite contents - Google Patents
Methods of measuring phosphite contentsInfo
- Publication number
- GB1095977A GB1095977A GB44536/65A GB4453665A GB1095977A GB 1095977 A GB1095977 A GB 1095977A GB 44536/65 A GB44536/65 A GB 44536/65A GB 4453665 A GB4453665 A GB 4453665A GB 1095977 A GB1095977 A GB 1095977A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- specified
- solution
- phosphite
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/16—Phosphorus containing
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biophysics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Chemically Coating (AREA)
Abstract
Phosphites may be determined in solution in the presence of hypophosphites by mixing with an acidic solution containing a non-oxidising, non-reducing acid and an oxi-anion with a central metal atom capable of forming a heteropoly acid with phosphites, adding a reducing agent which reacts more readily with hypophosphite than with phosphite, whereby a coloured solution is formed, and measuring the colour intensity. Sufficient acid to prevent hypophosphite interference should be present. Specified anions are tungstate, chromate, vanadate and, as exemplified, molybdate. Specified reducing agents are ascorbic acid, isoascrobic acid, hydroquinone and p-methylaminophonol sulphate. The acid solution is generally above 4N, and sulphuric acid is specified.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40815164A | 1964-11-02 | 1964-11-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1095977A true GB1095977A (en) | 1967-12-20 |
Family
ID=23615062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB44536/65A Expired GB1095977A (en) | 1964-11-02 | 1965-10-21 | Methods of measuring phosphite contents |
Country Status (4)
Country | Link |
---|---|
US (1) | US3425805A (en) |
AT (1) | AT269079B (en) |
DE (1) | DE1598608A1 (en) |
GB (1) | GB1095977A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3547586A (en) * | 1967-06-05 | 1970-12-15 | Jerry W Denney | Inorganic phosphate assay,and reagents therefor |
US3816075A (en) * | 1972-11-28 | 1974-06-11 | Atomic Energy Commission | Determination of hypophosphite ion concentration |
DE3476585D1 (en) * | 1984-04-09 | 1989-03-09 | Beckman Instruments Inc | Reagent for the determination of inorganic phosphate and use thereof in a rate analysis method |
DE3686229T2 (en) * | 1985-08-20 | 1993-03-11 | Kawasaki Steel Co | METHOD FOR DETECTING PHOSPHORIC DETERMINATIONS IN METAL MATERIAL. |
US4843015A (en) * | 1987-11-05 | 1989-06-27 | Westvaco Corporation | Method for determining volatile phosphorus in carbon |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2697651A (en) * | 1953-03-09 | 1954-12-21 | Gen Am Transport | Colorimetric methods of determining hypophosphite contents of solutions |
-
1964
- 1964-11-02 US US408151A patent/US3425805A/en not_active Expired - Lifetime
-
1965
- 1965-10-11 AT AT917565A patent/AT269079B/en active
- 1965-10-21 GB GB44536/65A patent/GB1095977A/en not_active Expired
- 1965-10-25 DE DE19651598608 patent/DE1598608A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
AT269079B (en) | 1969-03-10 |
DE1598608A1 (en) | 1970-04-16 |
US3425805A (en) | 1969-02-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB912956A (en) | Improvements in and relating to chemical nickel plating of magnesium and its alloys | |
GB1095977A (en) | Methods of measuring phosphite contents | |
GB935680A (en) | Corrosion inhibiting | |
GB1345881A (en) | Hair colouring system | |
GB1522248A (en) | Method of inhibiting rusting of sponge iron | |
GB1346731A (en) | Rinse for metal coatings | |
GB655890A (en) | Improvements in or relating to the production of phosphate coatings on zinc or zinc-rich alloys | |
SE371216B (en) | ||
GB1313439A (en) | Cation exchange conversion of hydroxylamine sulphate to hydroxylamine nitrate | |
GB1093119A (en) | Improvements relating to the treatment of metal surfaces | |
GB1022927A (en) | Improvements in and relating to coloring aluminium articles by electrolytic depositions of colored compounds | |
ES414345A2 (en) | Treatment of zinc surfaces | |
GB899700A (en) | Improvements in or relating to the production of chemical conversion coatings upon aluminium and its alloys | |
GB1115258A (en) | Method of cesium removal | |
GB943169A (en) | Improvements relating to the phosphate-coating of metals | |
ES384248A1 (en) | Chromic acid conditioner for treatment of polymeric resin surfaces for electroless plating | |
GB1224418A (en) | A process for manufacturing a naphthalic acid derivative | |
ES348122A1 (en) | Process for the manufacture of 4,4'-diamino-1,1'-dianthraquinonylenes | |
GB1296883A (en) | ||
GB807730A (en) | Process for maintaining the efficiency of phosphatising baths at room temperature | |
GB1000862A (en) | Dyeing process and composition | |
GB1027325A (en) | Improvements in or relating to zinc phosphate conversion coating solution concentrates | |
ES430767A1 (en) | Composition and method for detecting cystine or cysteine | |
ES326205A1 (en) | A procedure for the preparation of hydroxylamine sulfate. (Machine-translation by Google Translate, not legally binding) | |
GB1068905A (en) | Process for the manufacture of adipic acid |