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88431 Supelco

Ammonium phosphate monobasic

analytical standard, for nitrogen determination according to Kjeldahl method, ≥99.5%

Synonym: mono-Ammonium phosphate, prim-Ammonium phosphate, Ammonium dihydrogenphosphate

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Properties

Related Categories Additional Standards, Analytical Reagents, Analytical Standards, Analytical Standards for Kjeldahl Determination, Analytical/Chromatography,
Quality Level   100
grade   analytical standard
description   traceable to NIST SRM 194
assay   ≥99.5% (T)
  ≥99.5%
form   neat
shelf life   limited shelf life, expiry date on the label
application(s)   HPLC: suitable
  gas chromatography (GC): suitable
  titration: suitable
impurities   12.18%±0.10% total Kjeldahl nitrogen
loss   ≤0.2% loss on drying
pH   3.8-4.4 (25 °C, 50 mg/mL in H2O)
mp   190 °C (dec.) (lit.)
solubility   H2O: soluble, clear, colorless
suitability   suitable for GC
  suitable for HPLC
Featured Industry   Food and Beverages
format   neat
SMILES string   N.OP(O)(O)=O
InChI   1S/H3N.H3O4P/c;1-5(2,3)4/h1H3;(H3,1,2,3,4)
InChI key   LFVGISIMTYGQHF-UHFFFAOYSA-N

Description

Application

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Caution

Store at room temperature. We recommend to purge with dried argon or nitrogen after first use to exclude humidity.

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles

Articles

HPLC Analysis of Acetaminophen, Caffeine, Chlorpheniramine, Ibuprofen, Naproxen, Phenylephrine, and Pseudoephedrine on Ascentis® Express C18

From our library of Articles, Sigma-Aldrich presents HPLC Analysis of Acetaminophen, Caffeine, Chlorpheniramine, Ibuprofen, Naproxen, Phenylephrine, and Pseudoephedrine on Ascentis® Express C18
Keywords: Chromatography, High performance liquid chromatography, Pharmaceutical, Separation

HPLC Analysis of Benzoate and Sorbate on Ascentis® Express RP-Amide

From our library of Articles, Sigma-Aldrich presents HPLC Analysis of Benzoate and Sorbate on Ascentis® Express RP-Amide
Keywords: Chromatography, High performance liquid chromatography, Separation, Vitamins

HPLC Analysis of Synthetic Food Dyes on Ascentis® Express C18

From our library of Articles, Sigma-Aldrich presents HPLC Analysis of Synthetic Food Dyes on Ascentis® Express C18
Keywords: Chromatography, High performance liquid chromatography

Kjeldahl Method Standard

For almost 130 years the determination of nitrogen using the method developed by Danish chemist Johan Gustav Christoffer Thorsager Kjeldahl (1849–1900) has been an internationally accepted standard. ...
Michaela Buffler, Nicole Amann
AnalytiX Volume 8 Article 3
Keywords: Agriculture, Digestions, Environmental, Kjeldahl titrations, Pharmaceutical, Protein assay, Titrations

Peer-Reviewed Papers
15

References

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