71.080.40 – Organic acids – PDF Standards Store

JIS K 3601:1989

Wed, 06 Nov 2024 02:32:12 +0000

Lactate Analyzers

Published By	Publication Date	Number of Pages
JIS	1989-02-01	12

JIS K 3331:1995

Wed, 06 Nov 2024 02:32:09 +0000

Hardened Oils and Fatty Acids for Industrial Use

Published By	Publication Date	Number of Pages
JIS	1995-01-01	25

ISO 753-9:1981

Tue, 05 Nov 2024 23:57:38 +0000

Specifies a method for a visual comparison of the turbitity obtained by adding a barium chloride solution to a solution of a test portion acidified with hydrochloric acid, with that similarly obtained from a sulphate solution of known concentration. Using a test portion of 100 g, the method is applicable directly to products having inorganic sulphate contents in the range 0,001 % (m/m) to 0,1 % (m/m). This range can be extended by adjusting the mass of the test portion. It has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). ISO 753/1 to ISO 753/11 cancel and replace ISO Recommendation R 753-1968.

ISO 753-8:1981

Tue, 05 Nov 2024 23:57:37 +0000

Specifies a method for a visual comparison of the tubitity obtained by adding a silver nitrate solution to a solution of a test portion acidified with nitric acid, with that similary obtained from a chloride solution of known concentration. Using a test portion of 50 g, the method is applicable directly to products having inorganic chloride contents in the range 0,0005 % (m/m) to 0,05 % (m/m). This range can be extended by adjusting the mass of the test portion. It has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). ISO 753/1 to ISO 753/11 cancel and replace ISO Recommendation R 753-1968.

ISO 753-7:1981

Tue, 05 Nov 2024 23:57:37 +0000

Acetic acid for industrial use — Methods of test — Part 7: Determination of dichromate index

Published By	Publication Date	Number of Pages
ISO	1981-10	4

ISO 753-6:1981

Tue, 05 Nov 2024 23:57:36 +0000

The principle consists in reaction of a test portion, under specified conditions, with an excess of potassium permanganate solution in the presence of dilute sulphuric acid. Iodometric titration of the residual potassium permanganate. The method is applicable to products having permanganate indexes equal to or greater than 10 mg/100 ml. It has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). ISO 753/1 to ISO 753/11 cacel and replace ISO Recommendation R 753-1968.

ISO 753-1:1981

Tue, 05 Nov 2024 23:57:35 +0000

Gives general instructions and also specifies the methods to be used for the determination of dry residue after evaporation on a water bath, for the determination of the crystallizing point (temperature) of glacial acetic acid, for the determination of water content, for the measurement of colour and for the determination of arsenic content. The method is applicable to products having acedic acid contents in the range 98 to 100 % (m/m). This International Standard has also been approved by the International Union of Pure and Applied Chemitry (IUPAC). International Standards ISO 753/1 to 753/11 cancel and replace ISO Recommendation R 753-1968.

ISO 753-3:1983

Tue, 05 Nov 2024 23:57:35 +0000

Specifies the determination of total reducing matter and of reducing compounds other than formic acid. The principle consists in oxidation of formic acid and other reducing compounds in a test portion with an excess of sodium hypobromit solution. Determination of the excess sodium hypobromite by iodometry. Oxidation of reducing compounds other than formic acid with an excess of potassium bromide-bromate solution in an acid media. Determination of the excess potassium bromide-bromate by iodometry. Determination of the formic acid content from the difference between the two determinations. Is applicable to products having formic acid contents, between 0,02 % (m/m) and 0,35 % (m/m).

ISO 753-4:1981

Tue, 05 Nov 2024 23:57:35 +0000

The principle of the determination consists in reaction of the acetaldehyde present in a test portion with an excess of sodium hydrogen sulphite solution, and iodometric titration of the residual sodium hydrogen sulphite. The method is applicable to products having acetaldehyde monomer contents equal to or greater than 0,01 % (m/m). This International Standard as also been approved by the International Union of Pure and Applied Chemistry (IUPAC).International Standards ISO 753/1 to ISO 753/11 cancel and replace ISO Recommendation R 753-1968.

ISO 753-2:1981

Tue, 05 Nov 2024 23:57:35 +0000

Acetic acid for industrial use — Method of test — Part 2: Determination of acetic acid content — Titrimetric method

Published By	Publication Date	Number of Pages
ISO	1981-10	4