16889-10-4 Usage
Description
Disperse Red 73 is a dark red powder that exhibits bright red fluorescence under blue light. It is soluble in ethanol, acetone, and benzene, and demonstrates good fastness and levelness, making it suitable for various dyeing methods.
Uses
Used in Textile Industry:
Disperse Red 73 is used as a dye for polyester fibers and can be applied directly for printing on polyester or醋 (possibly a typo in the original text,醋 means "vinegar" in Chinese, which doesn't make sense in this context). It is also suitable for superfine fiber dyeing.
Used in Dyeing Process:
Disperse Red 73 is used as a dye in the dyeing process, where it is compatible with iron, copper, calcium, and magnesium ions without affecting lightfastness. The appropriate pH value for dyeing is between 3 and 7, and it should not be used with alkali in dyeing and printing. The dye provides good fastness and levelness, and the liquid should be adjusted to a pH of around 5 using sulfuric acid or formic acid.
Used in Printing Industry:
Disperse Red 73 can be used for direct printing on polyester fiber or vinegar (again, this might be a typo and should be reviewed for accuracy), and it can also be used for the impression of discharge printing.
Standard:
Disperse Red 73 meets the following standards for various types of fastness:
Ironing Fastness: AATCC 5, ISO 5
Light Fastness: AATCC 7, ISO 5
Persperation Fastness: AATCC 5, ISO 6
Washing Fastness: AATCC 5, ISO 5
Fading: AATCC 5, ISO 3
Stain: AATCC 5, ISO 5
Preparation
2-Cyano-4-nitroaniline diazo, and N-ethyl-N-cyanoethylaniline?coupling.
Flammability and Explosibility
Nonflammable
Standard
Ironing Fastness
Fading
Stain
ISO
5
Check Digit Verification of cas no
The CAS Registry Mumber 16889-10-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,8,8 and 9 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 16889-10:
(7*1)+(6*6)+(5*8)+(4*8)+(3*9)+(2*1)+(1*0)=144
144 % 10 = 4
So 16889-10-4 is a valid CAS Registry Number.
InChI:InChI=1/C18H16N6O2/c1-2-23(11-3-10-19)16-6-4-15(5-7-16)21-22-18-9-8-17(24(25)26)12-14(18)13-20/h4-9,12H,2-3,11H2,1H3
16889-10-4Relevant articles and documents
Stable diazonium salts of weakly basic amines—Convenient reagents for synthesis of disperse azo dyes
Qiu, Jinjing,Tang, Bingtao,Ju, Benzhi,Xu, Yuanji,Zhang, Shufen
, p. 63 - 69 (2016/08/24)
A new synthetic strategy for industrially important deep-shade disperse azo dyes was presented in this study. The key procedure is to prepare stable solid diazonium salts of weakly basic amines in the absence of concentrated sulfuric acid. Diazotization by tert-butyl nitrite in ethyl acetate was allowed to proceed in the presence of equivalent 1,5-naphthalenedisulfonic acid as stabilizer of diazonium salts and donor of hydrogen ion for the reaction. The separated solid diazonium salts exhibited good thermal stability. The corresponding disperse azo dyes were subsequently synthesized through the azo-coupling of the prepared solid diazonium salts with a range of aromatic tertiary amines. The azo dyes were produced in short reaction time, excellent yields, mild reaction conditions, simple experimental procedure and low energy consumption.
EFFECT OF BENZANNELLATION ON THE COLOR OF p-AMINOAZO COMPOUNDS
Gorelik, M. V.,Lomzakova, V. I.
, p. 1641 - 1646 (2007/10/02)
Monoazo dyes containing a naphthalene ring were obtained by diazotization of 1-amino-4-nitro-2-naphthonitrile, 3-amino-5-nitronaphthoisothiazole, and 3-amino-5-nitrobenzoindazole and coupling of the diazonium salts with N,N-dialkyl derivatives of anilines.Their visible spectra were compared with the spectra of the corresponding benzene analogs.Annellation of the benzene ring in the residue of the diazo component gives rise to a bathochromic or hypsochromic shift, depending on the structure of the dye.The nature of the observed effects is discussed.
