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Acid yellow 42

Acid yellow 42 structure

CAS No:
6375-55-9
Formula:
C32H26N8O8S2.2Na
Chemical Name:
Acid yellow 42
Synonyms:
[1,1′-Biphenyl]-2,2′-disulfonic acid,4,4′-bis[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-,sodium salt (1:2);C.I. Acid Yellow 42,disodium salt;[1,1′-Biphenyl]-2,2′-disulfonic acid,4,4′-bis[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-,disodium salt;C.I. 22910;Acid Anthracene Yellow GR;Acid Fast Yellow MR;Acid Leather Yellow CRS;Airedale Yellow 3GM;Amacid Fast Yellow RS;Belacid Milling Yellow R;Benzyl Fast Yellow RS;Calcocid Milling Yellow R;Coomassie Yellow R;Coomassie Yellow RP;Cyanine Fast Yellow M;Erio Fast Yellow RL;Fast Silk Yellow SH;KCA Acid Milling Yellow M;Midlon Yellow PR;Milling Yellow 3G;Milling Yellow 3J;Milling Yellow RX;Naphthalene Leather Yellow 2G;Optanol Yellow R;Pharmacine Yellow R;Pharmatex Yellow G;Shikiso Acid Fast Yellow MR;Sulfonine Yellow CSR;Sulphon Yellow RS-CF;Suminol Milling Yellow MR;Supranol Yellow R;Symulon Acid Fast Yellow MR;Tertracid Milling Yellow R;Xylene Milling Yellow SH;C.I. Acid Yellow 42;Acid yellow 42;Acid Yellow K;Amacid Fast Yellow RS-EX;Orient Water Yellow 6;Water Yellow 6;Alphanol Fast Brilliant Yellow F 333;Midlon Yellow 2R;Everacid Milling Yellow MR;Orient Water Yellow 6C;Coomassie Yellow RS;Golden Yellow;Water Yellow 6C;Lecotan Yellow SH;Covanyl Yellow MR;Follone Yellow R;Coriacide Yellow 3J;Acid Yellow MR;Concorde Acid Yellow M-GR;Milling Yellow FG;Triacid Fast Milling Yellow 2R;63993-46-4;74968-16-4;84843-16-3;253167-34-9;846606-98-2;1266247-74-8
Categories:
Dyes and Pigments > Dye

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Acid yellow 42 Basic Attributes

Molecular Weight：

758.69

Exact Mass：

758.095398

EC Number：

228-940-9

HScode：

3204120000

Characteristics

PSA：

246

XLogP3：

6.07460

Appearance：

bright yellow powder

Safety Information

Precautionary statement(s)：

P261, P264, P272, P280, P302+P352, P305+P351+P338, P321, P333+P313, P337+P313, P363, P501

Hazard Statements：

H317

GHS Classification：

|Warning|H317 (97.42%): May cause an allergic skin reaction [Warning Sensitization, Skin]|P261, P264, P272, P280, P302+P352, P305+P351+P338, P321, P333+P313, P337+P313, P363, and P501|Aggregated GHS information provided by 268 companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Acid yellow 42 Use and Manufacturing

Methods of Manufacturing

Using benzidine-2, 2'-bissulfonic acid and 1-phenyl-3-methyl-5-pyrazolone as raw materials, first double nitridation of the former, and then coupling with the latter to obtain the product. The finished product is obtained by salting out, filtering, drying and crushing.

Uses

Acid yellow R is mainly used for wool dyeing and direct printing of wool, silk and viscose fabrics. When used in the same bath dyeing of wool and other fibers, acetate fiber and cellulose fiber have a slight stain. Has good discharge. It can also be used for nylon dyeing and leather coloring.

Manufacturing Info：

[1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-bis[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-, sodium salt (1:2): ACTIVE

Computed Properties

Molecular Weight:758.7
Hydrogen Bond Acceptor Count:14
Rotatable Bond Count:7
Exact Mass:758.09539066
Monoisotopic Mass:758.09539066
Topological Polar Surface Area:246
Heavy Atom Count:52
Complexity:1480
Undefined Atom Stereocenter Count:2
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes