?u= Wed, 06 Nov 2024 02:30:06 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.1 ?u=/wp-content/uploads/2024/11/cropped-icon-150x150.png ?u= 32 32 ?u=/product/publishers/jis/jis-k-13571957-r1966/ Wed, 06 Nov 2024 02:30:06 +0000 Oxalic Acid

Published By	Publication Date	Number of Pages
JIS	1957-01-30	6

]]> Oxalic Acid

Published By	Publication Date	Number of Pages
JIS	1957-01-30	6

]]> ?u=/product/publishers/jis/jis-k-13551954-r1979/ Wed, 06 Nov 2024 02:30:05 +0000 Citric Acid

Published By	Publication Date	Number of Pages
JIS	1954-07-20	6

]]> Citric Acid

Published By	Publication Date	Number of Pages
JIS	1954-07-20	6

]]> ?u=/product/publishers/jis/jis-k-13521956-r1965/ Wed, 06 Nov 2024 02:30:04 +0000 Acetic Anhydride

Published By	Publication Date	Number of Pages
JIS	1956-08-21	5

]]> Acetic Anhydride

Published By	Publication Date	Number of Pages
JIS	1956-08-21	5

]]> ?u=/product/publishers/jis/jis-k-13531986/ Wed, 06 Nov 2024 02:30:04 +0000 Lactic Acid

Published By	Publication Date	Number of Pages
JIS	1986-07-01	9

]]> Lactic Acid

Published By	Publication Date	Number of Pages
JIS	1986-07-01	9

]]> ?u=/product/publishers/iso/iso-7611977/ Tue, 05 Nov 2024 23:58:42 +0000 Acetic anhydride and butan-1-ol for industrial use — Determination of bromine number

Published By	Publication Date	Number of Pages
ISO	1977-03	4

]]> The principle consists in treatment of a test portion in acid solution with excess standard volumetric potassium bromide-potassium bromate solution, addition of potassium iodide solution and titration of the liberated iodine with a standard volumetric solution of sodium thiosulphate. – Replaces ISO Recommendation R 761-1968.

]]> ?u=/product/publishers/iso/iso-7541982/ Tue, 05 Nov 2024 23:58:00 +0000 Acetic anhydride for industrial use — Methods of test

Published By	Publication Date	Number of Pages
ISO	1982-12	13

]]> Gives general instructions and specifies methods of analysis. The methods to be used are determination of destillation yield, of bromine number, of arsenic content, of permanganate index, of dichromate index, the measurement of colour, titrimetric determination of acetic anhydride content, gravimetric determination of ash, spectrometric determination of phosphate content and visual limit tests for inorganic chlorides, sulphates and heavy metals including iron, sulphuric acid colour test. It results from the combination into one single decument of draft International Standard ISO/DIS 754 part 1 to 10; it cancels and replaces ISO Recommendation R 754-1968.

]]> ?u=/product/publishers/iso/iso-1390-61977/ Tue, 05 Nov 2024 21:19:12 +0000 Maleic anhydride for industrial use — Methods of test — Part 6: Determination of iron content — 2,2'- Bipyridyl photometric method

Published By	Publication Date	Number of Pages
ISO	1977-06	5

]]> The principle is based on the dissolution, in hot hydrochloric acid, of the residue from the determination of the ash of a test portion (see ISO 1390/5). Reduction, by hydroxylammonium chloride, of the iron(III) contained in the solution thus obtained, formation of the coloured complex iron(II)-2,2'bipyridyl in a buffered medium. Photometric measurement of the coloured complex at a wavelength of about 510 nm. – ISO 1390, Parts 1 to 6, replace ISO Recommendation R 1390-1970.

]]> ?u=/product/publishers/iso/iso-1390-51977/ Tue, 05 Nov 2024 21:19:12 +0000 Maleic anhydride for industrial use — Methods of test — Part 5: Determination of ash

Published By	Publication Date	Number of Pages
ISO	1977-06	3

]]> The principle consists in burning a test portion and heating in a furnace controlled at (600 30) °C, until all carbonaceous matter has disappeared, to constant mass. The residue may be retained for the determination of iron. – ISO 1390, Parts 1 to 6, replace ISO Recommendation R 1390-1970.

]]> ?u=/product/publishers/iso/iso-1390-41977/ Tue, 05 Nov 2024 21:19:10 +0000 Maleic anhydride for industrial use — Methods of test — Part 4: Determination of maleic anhydride content — Titrimetric method

Published By	Publication Date	Number of Pages
ISO	1977-06	4

]]> The principle consists in the dissolution of a test portion in diluted standard volumetric sodium hydroxide solution and titration with standard volumetric sodium hydroxide solution in presence of phenolphthalein as indicator. – ISO 1390, Parts 1 to 6, replace ISO Recommendation R 1390-1970.

]]> ?u=/product/publishers/iso/iso-1390-31977/ Tue, 05 Nov 2024 21:19:10 +0000 Maleic anhydride for industrial use — Methods of test — Part 3: Determination of free acidity — Potentiometric method

Published By	Publication Date	Number of Pages
ISO	1977-06	4

]]> The procedure is based on the potentiometric titration of the free acidity in a test portion with a standard volumetric triethylamine solution in anhydrous methyl ethyl ketone (butanone). – ISO 1390, Parts 1 to 6, replace ISO Recommendation R 1390-1970.

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