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6428-38-2

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Basic Information
CAS No.: 6428-38-2
Name: 2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt
Molecular Structure:
Molecular Structure of 6428-38-2 (2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt)
Formula: C48H43 N13 O13 S3 . 3 Na
Molecular Weight: 1172.16
Synonyms: 2-Naphthalenesulfonicacid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-,trisodium salt (9CI);C.I. Direct Black 32, trisodium salt (8CI);BenzonerolABS;C.I. 35440;C.I. Direct Black 32;Cotoneral ABS;Cotonerol AB;DialuminousBlack AB;Diazol Fast Black JRA;Direct Artificial Silk Black BO;Direct Black2S;Direct Black 32;Direct Black AB;Direct Black Z for Leather;Direct FastBlack AB;Direct Fast Black CAB;Kayarus Black ARX;Orbamin Black A Conc.;SumilightBlack AB;
EINECS: 229-209-7
Hazard Symbols: Moderately toxic. Low toxicity by ingestion.
Safety: Moderately toxic by intraperitoneal route. Low toxicity by ingestion. When heated to decomposition it emits toxic vapors of NOx and SOx.
PSA: 457.69000
LogP: 11.00870
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    Direct black 32 (C.I. 35440)

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Chemistry

Chemistry informtion about C.I. Direct Black 32, Trisodium Salt (CAS NO.6428-38-2) is:
IUPAC Name: Trisodium (3z)-6-[2-Amino-4-(2-Hydroxyethylamino)Phenyl]Diazenyl-3-[[4-[4-[(2z)-2-[7-[2-Amino-4-(2-Hydroxyethylamino)Phenyl]Diazenyl-1-Oxo-3-Sulfonatonaphthalen-2-Ylidene]Hydrazinyl]Anilino]-3-Sulfonatophenyl]Hydrazinylidene]-4-Oxonaphthalene-2-Sulfonate
Synonyms: 2-Naphthalenesulfonic Acid, 6-[[2-Amino-4-[(2-Hydroxyethyl)Amino]Phenyl]Azo]-3-[[4-[[4-[[7-[[2-Amino-4-[(2-Hydroxyethyl)Amino]Phenyl]Azo]-1-Hydroxy-3-Sulfo-2-Naphthalenyl]Azo]Phenyl]Amino]-3-Sulfophenyl]Azo]-4-Hydroxy-, Trisodium Salt;Direct Black 32;2-Naphthalenesulfonic Acid, 6-2-Amino-4-(2-Hydroxyethyl)Aminophenylazo-3-4-4-7-2-Amino-4-(2-Hydroxyethyl)Aminophenylazo-1-Hydroxy-3-Sulfo-2-Naphthalenylazophenylamino-3-Sulfophenylazo-4-Hydroxy-, Trisodium Salt;C.I.DIRECTBLACK32;C.I. Direct Black 32, Trisodium Salt;Direct Black 32 (C.I. 35440)
Product Categories: Organics
MF: C48H40N13Na3O13S3
MW: 1172.07481
EINECS: 229-209-7
Following is the molecular structure of C.I. Direct Black 32, Trisodium Salt (CAS NO.6428-38-2) is:

Toxicity Data With Reference

Toxic information about C.I. Direct Black 32, Trisodium Salt (CAS NO.6428-38-2) is:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 1060mg/kg (1060mg/kg) behavioral: somnolence (general depressed activity) kidney, ureter, and bladder: other changes in urine composition skin and appendages (skin): "dermatitis, other: after systemic exposure" Toksikologicheskii Vestnik. Vol. (3), Pg. 38, 1998.
mouse LD50 oral > 5gm/kg (5000mg/kg) behavioral: somnolence (general depressed activity) kidney, ureter, and bladder: other changes in urine composition skin and appendages (skin): "dermatitis, other: after systemic exposure" Toksikologicheskii Vestnik. Vol. (3), Pg. 38, 1998.
rat LD50 intraperitoneal 1gm/kg (1000mg/kg) behavioral: somnolence (general depressed activity) kidney, ureter, and bladder: other changes in urine composition skin and appendages (skin): "dermatitis, other: after systemic exposure" Toksikologicheskii Vestnik. Vol. (3), Pg. 38, 1998.
rat LD50 oral > 10gm/kg (10000mg/kg) behavioral: somnolence (general depressed activity) kidney, ureter, and bladder: other changes in urine composition skin and appendages (skin): "dermatitis, other: after systemic exposure" Toksikologicheskii Vestnik. Vol. (3), Pg. 38, 1998.

Safety Profile

Moderately toxic by intraperitoneal route. Low toxicity by ingestion. When heated to decomposition it emits toxic vapors of NOx and SOx.