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Substance Name: C.I. Direct Black 38
RN: 1937-37-7
UNII: C7SV16SLWM
InChIKey: XRPLBRIHZGVJIC-UVHCWRHYSA-L

Molecular Formulas

  • C34-H25-N9-O7-S2.2Na
  • C34-H27-N9-O7-S2.2Na

Molecular Weight

  • 781.7395
 

Classification Codes

Classification Codes

  • Carcinogens
  • Coloring Agents
  • Mutation Data
  • Noxae
  • Reproductive Effect
  • Skin / Eye Irritant
  • TSCA Flag S (Substance is Identified in a Final Significant New Use Rule)
  • Tumor Data

Superlist Classification Code

  • Known to be a Carcinogen
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Names and Synonyms

Name of Substance

  • C.I. Direct Black 38
  • Direct black 3

Synonyms

  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-((4'-((2,4-diaminophenyl)azo)(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)-, disodium salt
  • Ahco Direct Black GX
  • Airedale Black ED
  • Aizen Direct Deep Black EH
  • Aizen Direct Deep Black GH
  • Aizen Direct Deep Black RH
  • Amanil Black GL
  • Amanil Black WD
  • Apomine Black GK
  • Apomine Black GX
  • Atlantic Black BD
  • Atlantic Black C
  • Atlantic Black E
  • Atlantic Black EA
  • Atlantic Black GAC
  • Atlantic Black GG
  • Atlantic Black GXCW
  • Atlantic Black GXOO
  • Atlantic Black SD
  • ATul Direct Black E
  • Azine Deep Black EW
  • Azocard Black EW
  • Azomine Black EWO
  • Belamine Black GX
  • Bencidal Black E
  • Benzamil Black E
  • Benzanil Black E
  • Benzo Deep Black E
  • Benzo Leather Black E
  • Benzoform Black BCN-CF
  • Black 2EMBL
  • Black 4EMBL
  • Brasilamina Black GN
  • Brilliant Chrome Leather Black H
  • C.I. 30235
  • C.I. Direct Black 38
  • C.I. Direct Black 38, disodium salt
  • Calcomine Black
  • Calcomine Black EXL
  • Carbide Black E
  • CCRIS 165
  • CERN prima 38
  • CERN prima 38 [Czech]
  • Chloramine Black C
  • Chloramine Black EC
  • Chloramine Black ERT
  • Chloramine Black EX
  • Chloramine Black EXR
  • Chloramine Black XO
  • Chloramine Carbon Black S
  • Chloramine Carbon Black SJ
  • Chloramine Carbon Black SN
  • Chlorazol black
  • Chlorazol Black E
  • Chlorazol Black E (biological stain)
  • Chlorazol Black EA
  • Chlorazol Black EN
  • Chlorazol Burl Black E
  • Chlorazol Leather Black ENP
  • Chlorazol Silk Black G
  • Chrome leather Black E
  • Chrome leather Black EC
  • Chrome leather Black EM
  • Chrome leather Black G
  • Chrome leather Brilliant Black ER
  • CI Direct Black 38
  • Coir Deep Black C
  • Columbia Black EP
  • Columbus Black EP
  • Coranil Direct Black F
  • Diacotton Deep Black
  • Diacotton Deep Black RX
  • Diamine Deep Black EC
  • Diamine Direct Black E
  • Diaphtamine Black V
  • Diazine Black E
  • Diazine Direct Black E
  • Diazine Direct Black G
  • Diazol Black 2V
  • Diphenyl deep Black G
  • Direct Black 3
  • Direct Black 38
  • Direct Black 38 (technical grade)
  • Direct Black A
  • Direct Black BRN
  • Direct Black CX
  • Direct Black CXR
  • Direct Black E
  • Direct Black EW
  • Direct Black EX
  • Direct Black FR
  • Direct Black GAC
  • Direct Black GW
  • Direct Black GX
  • Direct Black GXR
  • Direct Black JET
  • Direct Black Meta
  • Direct Black Methyl
  • Direct Black N
  • Direct Black Ndirect Black RX
  • Direct Black RX
  • Direct Black SD
  • Direct Black WS
  • Direct Black Z
  • Direct Deep Black E
  • Direct Deep Black E Extra
  • Direct Deep Black EA-CF
  • Direct Deep Black EAC
  • Direct Deep Black EW
  • Direct Deep Black EX
  • Disodium 4-amino-3-((4'-((2,4-diaminophenyl)azo)(1,1'-biphenyl)-4-azo))-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
  • EINECS 217-710-3
  • EM 38
  • Enianil Black CN
  • Erie Black B
  • Erie Black BF
  • Erie Black GAC
  • Erie Black GXOO
  • Erie Black JET
  • Erie Black NUG
  • Erie Black RXOO
  • Erie Brilliant Black S
  • Erie Fibre Black VP
  • Fenamin Black E
  • Fibre Black VF
  • Fixanol Black E
  • Formaline Black C
  • Formic Black C
  • Formic Black CW
  • Formic Black EA
  • Formic Black MTG
  • Formic Black TG
  • Hispamin Black EF
  • HSDB 5031
  • Interchem Direct Black Z
  • Kayaku Direct Deep Black EX
  • Kayaku Direct Deep Black GX
  • Kayaku Direct Deep Black S
  • Kayaku Direct Leather Black EX
  • Kayaku Direct Special Black AAX
  • Lurazol Black BA
  • META Black
  • Mitsui Direct Black EX
  • Mitsui Direct Black GX
  • NCI-C54557
  • Nippon Deep Black
  • Nippon Deep Black GX
  • NSC 47756
  • NSC 8679
  • Paper Black BA
  • Paper Black T
  • UNII-C7SV16SLWM

Systematic Names

  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-((4'-((2,4-diaminophenyl)azo)(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)-, disodium salt
  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-(2-(4'-(2-(2,4-diaminophenyl)diazenyl)(1,1'-biphenyl)-4-yl)diazenyl)-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2)
  • 4-Amino-3-((4'-((2,4-diaminophenyl)azo)-4- biphenylyl)azo)-5-hydroxy-6-(phenylazo)-2,7- naphthalenedisulfonic acid, disodium salt
  • C.I. Direct Black 38
  • C.I. Direct Black 38, disodium salt (8CI)
  • Disodium 4-amino-3-((4'-((2,4-diaminophenyl)azo)(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate

Superlist Names

  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-((4'-((2,4-diaminophenyl)azo)(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)-, disodium salt
  • C.I. Direct Black 38
  • Direct Black 38
  • Direct Black 38 (technical grade)
  • Direct Black 38, technical-grade
  • Direct Black 38, technical-grade [Benzidine-based dyes]
  • Direct Black Meta

Registry Numbers

CAS Registry Number

  • 1937-37-7

FDA UNII

  • C7SV16SLWM

Other Registry Numbers

  • 220970-37-6
  • 61701-15-3

System Generated Number

  • 0001937377

Molecular Formulas

Molecular Formulas

  • C34-H25-N9-O7-S2.2Na
  • C34-H27-N9-O7-S2.2Na

Molecular Formula Fragments

  • C34-H25-N9-O7-S2
  • C34-H27-N9-O7-S2
  • COMPONENT
  • Na

Structure Descriptors

InChI

1S/C34H27N9O7S2.2Na/c35-22-10-15-27(26(36)18-22)41-38-24-11-6-19(7-12-24)20-8-13-25(14-9-20)40-42-32-28(51(45,46)47)16-21-17-29(52(48,49)50)33(34(44)30(21)31(32)37)43-39-23-4-2-1-3-5-23;;/h1-18,44H,35-37H2,(H,45,46,47)(H,48,49,50);;/q;2*+1/p-2/b41-38+,42-40+,43-39+;;

InChIKey

XRPLBRIHZGVJIC-UVHCWRHYSA-L

Smiles

[Na+].[Na+].Nc1ccc(N=Nc2ccc(cc2)c3ccc(cc3)N=Nc4c(N)c5c(O)c(N=Nc6ccccc6)c(cc5cc4S(=O)(=O)[O-])S(=O)(=O)[O-])c(N)c1

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LDLo oral 1262mg/kg (1262mg/kg) KIDNEY, URETER, AND BLADDER: OTHER CHANGES

KIDNEY, URETER, AND BLADDER: OTHER CHANGES IN URINE COMPOSITION
Office of Toxic Substances Report. Vol. OTS,
rat LCLo inhalation 180gm/m3/1H (180000mg/m3)   Office of Toxic Substances Report. Vol. OTS,
rat LD50 oral 7600mg/kg (7600mg/kg) BEHAVIORAL: ATAXIA

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"
Office of Toxic Substances Report. Vol. OTS,

Physical Properties

Physical Property Value Units Temp (deg C) Source
log P (octanol-water) 4.900 (none)   EST
Water Solubility 3000 mg/L 25 EST
Vapor Pressure 1.53E-36 mm Hg 25 EST
Henry's Law Constant 8.23E-40 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 2.02E-10 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.