P-Dimethylaminobenzaldehyde is an organic compound with the molecular formula c9h11no, referred to as DMAB, white or light yellow leafy crystal or powder. Soluble in alcohol, ether, acetone, chloroform, acid and most organic solvents, slightly soluble in water. It has benzaldehyde like smell and gradually turns red when exposed to light.
DMAB application is mainly in the following five aspects:
1. Dye intermediates and analytical reagents. The product is used to determine indole, steatoxin, urinary blue mother, tryptophan and ergot, etc. it is also used to distinguish serum rash and scarlet fever.
2. In terms of dyes, it can be used to synthesize pressure heat sensitive dyes. It is also used to produce cationic brilliant red g (C.I. basic red 52). It can also be used as dye intermediate; It is used as a reagent for the determination of urobilin, indole, alkaloids and chromatographic analysis.
3. Determination of indole, stink, urinary blue mother, tryptophan, white chemicalbook protein, hydrogen peroxide, arsonamine, o-aminobenzoic acid, antipyrine ergot, etc. it is also used to distinguish serum rash and scarlet fever.
4. Manufacturing dyes.
5. Reagents for detecting amino acids, peptides, amines, indoles, hydrazine, hydrogen peroxide, o-aminobenzoic acid, antipyrine and ergot base; Used as a chromogenic agent for tryptophan; Used to detect tryptophan in protein; A test reagent for identifying indole producing microorganisms; It can react with pyrrole and primary amine to form colored condensation product (Schiff base).
P-DIMETHYLAMINOBENZALDEHYDE can be synthesized from N, N-dimethylaniline by two methods. ( 1 ) p-dimethylaminobenzaldehyde was synthesized from urotropine and N, N-dimethylaniline, and N, N-dimethylbenzylideneamine was converted into N, N-dimethylbenzylideneamine. The reaction was catalyzed by trifluoroacetic acid and acetic acid, and then hydrolyzed to p-dimethylaminobenzaldehyde. The side reaction was less, the yield was high, the reaction conditions were mild, the reagents were conventional reagents, less pollution, and environmentally friendly ( 2 ) The reaction with dimethylformamide in the presence of phosphorus oxychloride. In addition, another laboratory preparation method is using N, N-dimethylaniline, sodium nitrite and formaldehyde as raw materials.
Store in a cool and ventilated warehouse. Keep away from fire and heat source. The package shall be sealed and shall not be in contact with air and sunlight. It shall be stored separately from oxidants and alkalis, and mixed storage shall not be allowed. Provide corresponding varieties and quantities of fire-fighting equipment. The storage area shall be provided with suitable materials to contain leakage. It is harmful to aquatic organisms and may have long-term adverse effects on the water environment to avoid release into the environment.