C.I. Acid Red 138, disodium salt

Name	Acid Red 138
Synonyms	Red BW Acid Pink B Acid Red 138 Tracid Red Bs C.I. Acid Red 138 Acid Red 138 (18073) Acid red 138 (C.I. 18073) C.I. Acid Red 138, disodium salt disodium 5-acetamido-3-(4-dodecylphenyl)azo-4-hydroxy-naphthalene-2,7-disulfonate disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate 2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-(4-dodecylphenyl)azo-4-hydroxy-, disodium salt disodium (3E)-5-(acetylamino)-3-[2-(4-dodecylphenyl)hydrazinylidene]-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate
CAS	15792-43-5
EINECS	239-893-9
InChI	InChI=1/C30H39N3O8S2.2Na/c1-3-4-5-6-7-8-9-10-11-12-13-22-14-16-24(17-15-22)32-33-29-27(43(39,40)41)19-23-18-25(42(36,37)38)20-26(31-21(2)34)28(23)30(29)35;;/h14-20,35H,3-13H2,1-2H3,(H,31,34)(H,36,37,38)(H,39,40,41);;/q;2*+1/p-2

Molecular Formula	C30H37N3Na2O8S2
Molar Mass	677.73962
Solubility	Methanol (Very Slightly, Heated, Sonicated)
Appearance	Solid
Color	Dark Red to Very Dark Red
Storage Condition	Amber Vial, -20°C Freezer, Under inert atmosphere
Stability	Light Sensitive
Physical and Chemical Properties	Slightly soluble in water, aqueous solution to add hydrochloric acid or sodium hydroxide color are slightly shallow. In concentrated sulfuric acid was deep magenta, diluted color unchanged. Insoluble in concentrated nitric acid.
Use	For dyeing wool and silk

EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
use	weakly acidic pink B can be used for dyeing wool and silk, suitable for color above medium depth, with good wet treatment fastness and slightly poor sun fastness. Leveling agent should be added during dyeing to improve levelness. When used for dyeing wool with a variety of fibers in the same bath, the color of nylon is close to that of wool, the silk is slightly lighter, the diacetate fiber is not stained, the triacetate fiber is stained, and the cellulose fiber is slightly stained. It can also be used for printing nylon, silk, viscose and wool fabrics. for dyeing wool and silk
Production method	Using p-dodecylaniline (p-dodecylaniline) and N-acetyl H acid (N-acetyl H acid) as raw materials, p-dodecylaniline is diazotized and coupled with N-acetyl H acid to obtain the product..

Last Update：2024-04-10 22:29:15

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