ISO 2899:1974
$12.35
Sulphuric acid and oleums for industrial use — Determination of ammoniacal nitrogen content — Spectrophotometric method
| Published By | Publication Date | Number of Pages |
| ISO | 1974-04 | 7 |
Applicable to products having contents of more than 0.0001 % (m/m). The procedure described is suitable for contents between 0.0001 % (m/m) and 0.0005 % (m/m). It bases on distillation, with entrainment by steam, of the ammonia in the presence of an excess of sodium hydroxide and collection of the distillate in an excess of acid solution. Neutralization of the dexcess of acid and formation of the coloured complex by treatment with sodium phenate and sodium hypochlorite in the presence of acetone. Spectrophotometric measurement of the indophenol obtained at a wavelength of about 630 nm. Has also been approved by the IUPAC.
Related products
-
BS EN ISO 2897-2:1999
Plastics. Impact-resistant polystyrene (PS-I) moulding and extrusion materials – Preparation of test specimens and determination…
-
AS 1683.16.1:2001
Methods of test for elastomers – Determinations using a shearing-disc viscometer – Determination of Mooney…
-
ISO 2699:1994
Moteurs diesels — Porte-injecteurs de combustible complets de taille “S”, à fixation par bride —…
-
BS 4427-6:1974
Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial…
-
ISO 6899:1984
Acceptance conditions of open front mechanical power presses — Testing of the accuracy Published By…
-
BS 3884-1:1974
Modular units for machine tools – Specification for basic units Published By Publication Date Number…
-
ISO 2829:1973
Aluminium oxide primarily used for the production of aluminium — Determination of phosphorus content —…
-
ISO 2499:1974
isoButyl methyl ketone for industrial use — List of methods of test Published By Publication…
-
BS 3762-3-3.2:1983
Analysis of formulated detergents. Quantitative test methods – Method for determination of hydrolyzable and non-hydrolyzable…
-
BS EN 61318:2008
Live working. Conformity assessment applicable to tools, devices and equipment Published By Publication Date Number…
-
BS 3903:1977
Methods of test for sulphuric acid, oleum and liquid sulphur trioxide Published By Publication Date…
-
ISO 2869:1973
Agents de surface — Détergents — Matière active anionique hydrolysable en milieu alcalin — Détermination…
-
BS 6057-3.22:1990
Rubber latices. Methods of test – Determination of residual acrylonitrile content in nitrile latex Published…
-
IEEE 1003.1-2024
IEEE/Open Group Standard for Information Technology–Portable Operating System Interface (POSIX™) Base Specifications, Issue 8 (Published)…
-
BS 7020-6.1:1988:1989 Edition
Analysis of iron ores. Methods for the determination of phosphorus content – Titrimetric method Published…
-
AS 1683.16.2:2001
Methods of test for elastomers – Determinations using a shearing-disc viscometer – Determination of pre-vulcanizing…
-
AS 1833:2002
Austenitic cast iron Published By Publication Date Number of Pages AS 2002-06-04 16
-
IEC 61318:2007
Live working – Conformity assessment applicable to tools, devices and equipment Published By Publication Date…
-
BS 5243:1975
General principles for sampling airborne radioactive materials Published By Publication Date Number of Pages BSI…
-
ISO 2099:1972
Purified glycerol for industrial use — Determination of density at 20 degrees C Published By…
-
BS 5796:1987
Specification for drain fill and level plugs for earth-moving machinery Published By Publication Date Number…
-
ISO 299:1987
Machine tool tables — T-slots and corresponding bolts Published By Publication Date Number of Pages…
-
BS EN 28996:1994
Ergonomics. Determination of metabolic heat production Published By Publication Date Number of Pages BSI 1994…
-
ISO 2999:1974
Sodium pyrophosphate for industrial use — Estimation of pyrophosphate content — Potentiometric method Published By…
-
ISO 2879:1975
Glycerine for industrial use — Determination of glycerol content — Titrimetric method Published By Publication…
-
ISO 2809:1976
Paints and varnishes — Determination of light fastness of paints for interior use Published By…
-
BS 5711-4:1979
Methods of sampling and test for glycerol – Determination of density and relative density Published…
-
ISO 2839:1974
Prints and printing inks — Assessment of resistance to soaps Published By Publication Date Number…
-
ISO 2891:1977
Modular units for machine tool construction — Centre bases and columns Published By Publication Date…
-
IEEE 1003.1-2024
IEEE/Open Group Standard for Information Technology–Portable Operating System Interface (POSIX™) Base Specifications, Issue 8 (Published)…
-
ISO 2859:1974
Sampling procedures and tables for inspection by attributes Published By Publication Date Number of Pages…
-
BS 4978:1973:1979 Edition
Specification for timber grades for structural use Published By Publication Date Number of Pages BSI…
-
AS 1683.16.3:2001
Methods of test for elastomers – Determinations using a shearing-disc viscometer – Determination of the…
-
ASHRAE Fundamentals Handbook IP 2013
2013 ASHRAE Handbook – Fundamentals – IP Edition Published By Publication Date Number of Pages…
-
ISO 289-2:1994
Rubber, unvulcanized — Determinations using a shearing-disc viscometer — Part 2: Determination of pre-vulcanization characteristics…
-
BS 5667-3:1979
Specification for continuous mechanical handling equipment – safety requirements – Loose bulk materials: storage equipment…
-
ISO 2299:1973
Sawn timber of broadleaved species — Defects — Classification Published By Publication Date Number of…
-
ISO 2199:1972
Sodium hydrogen carbonate for industrial use — Determination of sodium hydrogen carbonate content — Titrimetric…
-
BS 4140-18:1986
Methods of test for aluminium oxide – Determination of phosphorus content Published By Publication Date…
-
BS 6001-2:1993
Sampling procedures for inspection by attributes – Specification for sampling plans indexed by limiting quality…
