119-19-7 Usage
General Description
7-Anilino-1-naphthol-3-sulfonic acid, also known as Acid Orange 4, is a synthetic organic compound. It is composed of bright orange solid crystals that are soluble in water. This acid is frequently used as an acid dye for textiles, including wool, silk, and nylon. It is notable for its application in producing ink and toners, along with its usage in biochemistry for its staining properties. There are regulations for its usage, especially in Europe, due to its suspected environmental toxicity. Its molecular formula is C16H13NO5S and its molecular weight is 339.34 g/mol.
Check Digit Verification of cas no
The CAS Registry Mumber 119-19-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,1 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 119-19:
(5*1)+(4*1)+(3*9)+(2*1)+(1*9)=47
47 % 10 = 7
So 119-19-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H13NO4S/c18-16-10-14(22(19,20)21)8-11-6-7-13(9-15(11)16)17-12-4-2-1-3-5-12/h1-10,17-18H,(H,19,20,21)
119-19-7Relevant articles and documents
Azo dyestuffs
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, (2008/06/13)
Azo dyestuffs, which in the acid form, are represented by the formula: wherein A is an aromatic radical, M is a 1,4-benzene radical which may be substituted, E is the residue of a coupling component which is free from azo groups, At least one of A and M containing a phosphonic acid group, and the metal complexes of those having a metallisable group are reactive dyes suitable for use in the process of German OLS No. 2324809.
