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31831

Supelco

Kjeldahl Catalyst according to Missouri

tablet, without Hg, Se, Sb, Ti, Pt

Synonym(s):

Nitrogen determination (Missouri)

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About This Item

MDL number:
MFCD00144529
UNSPSC Code:
41116105
PubChem Substance ID:
329753926

form

tablet

suitability

in accordance for function test

application(s)

food and beverages
forensics and toxicology
general analytical

SMILES string

[Na+].[Na+].[Cu++].[O-]S([O-])(=O)=O.[O-]S(=O)(=O)OOS([O-])(=O)=O

InChI

1S/Cu.2Na.H2O8S2.H2O4S/c;;;1-9(2,3)7-8-10(4,5)6;1-5(2,3)4/h;;;(H,1,2,3)(H,4,5,6);(H2,1,2,3,4)/q+2;2*+1;;/p-4

InChI key

PIAKSAKPSSOOGC-UHFFFAOYSA-J

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General description

Kjeldahl′s method is generally used for the determination of nitrogen in proteins.[1] There are many Kjeldahl catalyst, like copper catalyst Kjeldahl method can be used for the determination of crude protein in feed materials.[2] Mercuric oxide Kjeldahl catalyst is a bit toxic and can be replaced by titanium dioxide, for estimation of total nitrogen content in cereal grains.[3]

Packaging

250 tablets 2.5 g each

hcodes

H412

Hazard Classifications

Aquatic Chronic 3

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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A STUDY OF CONDITIONS FOR KJELDAHL DETERMINATION OF NITROGEN IN PROTEINS DESCRIPTION OF METHODS WITH MERCURY AS CATALYST, AND TITRIMETRIC AND GASOMETRIC MEASUREMENTS OF THE AMMONIA FORMED.
Hiller A
The Journal of Biological Chemistry, 176 (3), 1401-1420 (1948)
The use of titanium dioxide as a catalyst for large-scale kjeldahl determination of the total nitrogen content of cereal grains.
WIlliams PC.
Journal of the Science of Food and Agriculture, 24 (3), 343-348 (1973)
Comparison of LECO FP-228" nitrogen determinator" with AOAC copper catalyst Kjeldahl method for crude protein.
Sweeney RA and Rexroad PR
Journal - Association of Official Analytical Chemists, 70 (6), 1028-1030 (1986)

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