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Merck
CN

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

Key Documents

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

Packaging

250 tablets 2.5 g each

Hazard Statements

H412

Precautionary Statements

P273 - P501

Hazard Classifications

Aquatic Chronic 3

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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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)
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)

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