C.I. Acid Red 138
Basic information
- CAS
15792-43-5- Standard SMILES
CCCCCCCCCCCCc1ccc(N=Nc2c(S(=O)(=O)[O-])cc3cc(S(=O)(=O)[O-])cc(NC(C)=O)c3c2O)cc1.[Na+].[Na+]- InChIKey
CZWHGIACASUWJC-UHFFFAOYSA-L- Molecular formula
- C30H37N3Na2O8S2
- Average molar mass
- 677.7 g/mol
- Monoisotopic mass
- 677.18174606
Names & identifiers
- Preferred name
- C.I. Acid Red 138
- IUPAC
- disodium;5-acetamido-3-[(4-dodecylphenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonate
- English name
- Tracid Red Bs
- Molecular formula
- C30H37N3Na2O8S2
- Molecular weight
- 677.73962
Names & synonyms
C.I. Acid Red 138DTXSID90659442,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-((4-dodecylphenyl)azo)-4-hydroxy-, disodium saltDisodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-(2-(4-dodecylphenyl)diazenyl)-4-hydroxy-, sodium salt (1:2)Disodium 5-(acetylamino)-3-((4-dodecylphenyl)azo)-4-hydroxynaphthalene-2,7-disulphonate2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxy-, disodium salt2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-[2-(4-dodecylphenyl)diazenyl]-4-hydroxy-, sodium salt (1:2)RefChem:572121DTXCID60350792,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-(4-dodecylphenyl)azo-4-hydroxy-, disodium salt239-893-9
Show more names
Red BWC.I.18073Acid Pink BTracid Red BsAcid Red 138 (18073)Weak Acid Pink Red BDycosweak Acid Pink BKayanol Milling Red BW
15792-43-5Acid Red 138TracidRedBsC.I. Acid Red 138, disodium saltdisodium;5-acetamido-3-[(4-dodecylphenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonateAcid Red 138 (~35% Dye Content)MFCD00137515EINECS 239-893-9
Database identifiers
- CAS
15792-43-5- PubChem CID
- 85109
- DTXSID
DTXSID9065944- EC Number
- 239-893-9
Properties
Computed structural properties
- Topological polar surface area
- 205 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 10
- Rotatable bonds
- 14
- Heavy atoms
- 45
- Formal charge
- 0
- Complexity
- 1,070
Physicochemical properties
- storage temp.
- -20 °C · Amber Vial, -20°C Freezer, Under inert atmosphere
- solubility
- Methanol (Very Slightly, Heated, Sonicated)
- form
- Solid
- color
- Dark Red to Very Dark Red
- Stability
- Light Sensitive
- CAS DataBase Reference
- 15792 · 15792-43-5
- EPA Substance Registry System
- 138 · C.I. Acid Red 138, disodium salt (15792-43-5)
- Symbol(GHS)
- 9 · GHS09
- Signal word
- Warning
- Hazard statements
- 400 · H400-H410
- Precautionary statements
- 273 · P273-P391-P501-P273-P391-P501
- TSCA
- TSCA listed
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 3.3% (15 of 460) of reports.
Warning
H400 (96.5%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
P273, P391, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 460 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: 2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxy-, disodium salt
2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-(4-dodecylphenyl)azo-4-hydroxy-, disodium salt: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazard Classes and CategoriesAquatic Acute 1 (96.5%)
Safety data
- tsca
- TSCA listed
- Signal word
- Warning
- Symbol(GHS)
- GHS09
- Hazard statements
- H400-H410
- Precautionary statements
- P273-P391-P501-P273-P391-P501
Chemistry & industry
Uses & manufacturing
General Manufacturing Information2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-[2-(4-dodecylphenyl)diazenyl]-4-hydroxy-, sodium salt (1:2): ACTIVE
Applications
UsesAcid Red 138 is an organic azo dye used in the textile industry for wool fabrics, silk and nylon fabrics.
Preparation methods
Preparation4-Dodecylbenzenamine diazo, and 4-Acetamido-5-hydroxynaphthalene-2,7-disulfonic acidcoupling.
Upstream & downstream products
Upstream raw materials
Suppliers
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Related reactions
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Compound notes
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