Synonyms: Ehrlich's reagent
Formula: (CH3)2NC6H4CHO
Formula Weight: 149.19
CAS No.: 100-10-7
Purity: ≥99.0% (HPLC)
Application: Forms colored condensation products (Schiff bases) with pyrroles1 and primary amines.2
Other Notes: Analytical reagent for the determination of amino acids and peptides, amines, indoles, hydrazines and hydrogen peroxides; spray reagent for tryptophan3,4; For the determination of tryptophan in proteins5; Used in microbiology as test reagent for the identification of indole-producing microorganisms.; For Kovacs reagent dissolve 10 g 4-dimethylamino-benzaldehyde in 150 mL 1-pentanol and add 50 mL hydrochloric acid conc.
Anion Traces: chloride (Cl-): ≤50 mg/kg
Assay: ≥99.0% (HPLC)
Cation Traces: Na: ≤50 mg/kg
Ign. Residue: ≤0.1% (as SO4)
Loss: ≤0.5% loss on drying
MP: 73-75°C
Quality: for the determination of hydroxyproline