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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
calcium 4-[(5-chloro-4-methyl-2-sulfonatophenyl)diazenyl]-3-hydroxy-2-naphthoate

Inventory

EC number:
230-303-5
EC name:
Calcium 4-[(5-chloro-4-methyl-2-sulphonatophenyl)azo]-3-hydroxy-2-naphthoate
CAS number:
7023-61-2
CAS number:
7023-61-2
Synonyms
Names:
2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl) azo]-3-hydroxy-, calcium salt (1:1)
2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-, calcium salt (1:1
2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-, calcium salt (1:1)
C.I. Pigment Red 48:2
Identifier:
IUPAC name
calcium 4-[(E)-2-(5-chloro-4-methyl-2-sulfonatophenyl)diazen-1-yl]-3-hydroxynaphthalene-2-carboxylate
Identifier:
Colour Index
Pigment Red 48:2
Identifier:
other: Molecular formula
C18H11Ca2ClN2O6S
Identifier:
other: Molecular formula
C18H11CaClN2O6S
Identifier:
other: InChl
InChI=1S/C18H13ClN2O6S.Ca/c1-9-6-15(28(25,26)27)14(8-13(9)19)20-21-16-11-5-3-2-4-10(11)7-12(17(16)22)18(23)24;/h2-8,22H,1H3,(H,23,24)(H,25,26,27);/q;+2/p-2/b21-20+;
Identifier:
other: SMILES notation
c12c(N=Nc3cc(c(C)cc3S(=O)(=O)[O-])Cl)c(c(C(=O)[O-])cc1cccc2)O.[Ca+2]

Molecular and structural information

Molecular formula:
C18H13ClN2O6S.Ca
Molecular weight:
458.886
SMILES notation:
[Ca+2].Cc1cc(c(cc1Cl)N=Nc2c3ccccc3cc(C([O-])=O)c2O)S([O-])(=O)=O
InChl:
InChI=1/C18H13ClN2O6S.Ca/c1-9-6-15(28(25,26)27)14(8-13(9)19)20-21-16-11-5-3-2-4-10(11)7-12(17(16)22)18(23)24;/h2-8,22H,1H3,(H,23,24)(H,25,26,27);/q;+2/p-2
Structural formula:
Chemical structure

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