Direct Red 31

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Molecular Formula:C₂₂H₁₄N₆O₉S₂Na₂

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Synonyms:;C.I.Acid Black 1;

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CAS NO:1658-56-6

EC NO:216-760-3

Molecular Formula:C₂₀H₁₃N₂NaO₄S

Molecular Weight:400.383

Synonyms:C.I. 15620;C.I. Acid Red 88;C.I. Acid Red 88, monosodium salt;Acid red 88;4-(2-Hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid,sodium salt;Acid Red 88;Acid Red 88 (C.I.);sodium 4(-2-hydroxy-1-naphthylazo)naphthalenesulphonate;Acid Red 88 (15620);Acid Red A;C.I.Acid Red 88;sodium 4-[(2E)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]naphthalene-1-sulfonate;4-[2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]naphthalene-1-sulfonate;sodium 4-[(E)-(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate;

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Synonyms:;C.I.Acid Red 18;

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CAS NO:633-96-5

EC NO:211-199-0

Molecular Formula:C₁₆H₁₁N₂O₄SNa

Molecular Weight:350.3243

Synonyms:;C.I. 15510;C.I. Acid Orange 7;C.I. Acid Orange 7, monosodium salt;D & C Orange no. 4;Orange II sodium salt;4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt;Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate;Orange Ⅱ;Acid Orange II Lake;Pigment Orange 17 (15510:1);sodium 4-[(2E)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]benzenesulfonate;sodium 4-[(E)-(2-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonate;

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CAS NO:6428-31-5

EC NO:229-208-1

Molecular Formula:C₃₄H₂₇N₁₃Na₂S₂O₇

Molecular Weight:839.77

Synonyms:;C.I. 35255;C.I. Direct Black 19;C.I. Direct Black 19 (VAN);C.I. Direct Black 19, disodium salt;Direct Fast Black G;C.I.Direct Black 19;disodium (3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate;(3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid;Direct Black G;

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CAS NO:5001-72-9

EC NO:225-669-8

Molecular Formula:C₃₂H₂₁N₅Na₂O₈S₂

Molecular Weight:713.6474

Synonyms:;C.I.Direct Red 31;Disodium 7,7'-iminobis(4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate);Direct Pink 5B;2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2);2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-;EINECS 225-669-8;2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(phenylazo)-, disodium salt;disodium (3E,3'E)-7,7'-iminobis[4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2-sulfonate];

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