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Details for p-Aminoacetailide

p-Aminoacetailide

Category :

Dyestuffs and Pigments

 p-Aminoacetailide
CAS NO : 122-80-5
EC NO : 204-576-6
MF : C8H10N2O
MW : 150.1778
Specification : 99% min
Packing : 25kg 50kg drum or bag
Product description : What is the chemical of p-Aminoacetailide ? Appearance: White to light red crystals, gradually turning black in the air ; Assay: 99% min by HPLC ; IR Identity: conform to standard ; HNMR： conform to standard ; carbon spectrum: conform to standard ; Water by K. F.:0.5% max or as per the customer’s request ; Loss on drying:0.5% max. or as per the customer’s request ; Used for the production of dyes and pharmaceutical intermediates. Also used for producing dispersed yellow G, direct acid resistant vermilion 4BS, acid resistant magenta 6B, active blue AG, black salt ANB, and neutral bright blue GV, etc How to produce thechemical? The production method involves nitration of desalinated water (acetanilide) with mixed acid to produce p-nitroacetanilide, which is then reduced to p-aminoacetanilide using iron powder. The reaction solution is neutralized, crystallized, and dried to obtain the final product. 1. Nitrification: Add 675kg of concentrated sulfuric acid (98%) to the kettle, stir, and add 225kg of acetanilide (99%) at 20-25 ℃ for 2-2.5h. After adding, dissolve it completely. Cool down to 7 ℃ and add mixed acid (composed of 63kg water, 60kg 98% sulfuric acid, and 107kg 96% nitric acid) dropwise within about 20 hours at 4-7 ℃. After dropwise addition, dilute in 4000L of ice water and let it stand for 1 hour. Separate the upper waste acid by siphon, filter the lower material, and wash with water until neutral to obtain p-nitroacetanilide. 2. Add 700kg of water to the reduction wooden barrel, stir, add 110kg of iron powder and 4kg of acetic acid (98%), heat up to 80 ℃, and add the above-mentioned half nitro compound to 2-2.5kg, with the temperature controlled at 72-75 ℃. After adding, keep warm for 1 hour and let it stand for 1 hour. Draw the upper layer of material liquid into the neutralization kettle, neutralize it with pure alkali (about 4kg) at 70-75 ℃ until pH=8, and add a small amount of sulfide alkali to remove iron ions. Let it stand for 1 hour, then suck the upper clear liquid into the scraper type crystallization tank and cool it to 18 ℃. After centrifugal filtration and drying, about 200kg of p-aminoacetanilide was obtained with a total yield of 80%. The production of p-aminoacetanilide can also start from p-nitroaniline, mix it with acetic acid and acetic anhydride, stir well, heat for 4-5 hours, filter out the crystals with water, wash with water, and filter; Then add water, iron powder, and acetic acid to the washed p-nitroacetanilide, heat and stir for 4 hours, decolorize, filter to remove iron oxide, cool the filtrate to precipitate crystals, filter, and recrystallize with ethanol to obtain the finished product. Raw material consumption quota: Acetanilide (98%) 1210kg/t, sulfuric acid (98%) 4000kg/t, nitric acid (95%) 577kg/t
Uses : Used for the production of dyes and pharmaceutical intermediates
Synonyms : C.I. 76005;C.I. Oxidation Base 19;p-Aminoacetanilide;N-phenylglycinamide;N-(4-aminophenyl)acetamide;4'-Aminoacetanilide;p-Acetamino aniline;4-Acetamidoaniline;Para Amino Acetanilide;p-Aminoacetailide/4-Amino-acetanilide/PAA;p-Aminoacetailide;4-Amino-acetanilide;
Molecular Structure : p-Aminoacetailide 122-80-5
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