4-nitrotoluene-2-sulphonic Acid (Pntosa)

Our company is exporting and supplying of 4-Nitrotoluene-2-Sulphonic Acid (PNTOSA) to our patrons with the following details:
CAS NO:121-03-9
EC NO:204-445-3
Molecular Formula:C7H7NO5S
Molecular Weight:217.1992
Specification:
InChI:InChI=1/C7H7NO5S/c1-5-4-6(8(9)10)2-3-7(5)14(11,12)13/h2-4H,1H3,(H,11,12,13)
Product description:
Chemical name: p-nitrotoluene-o-sulfonic acid
Structural formula:

Chemical formula: C7H11NO7S
Molecular weight: 253
CAS NO.:121-03-9
Quality index:
ItemIndex
(1)Appearancemilk white crystal
(2)Assay (Gross sample)%a Y 80.0
(3)Moisture (Gross sample)%a 5.0
(4)Free acid (Gross sample)%a 1.0
(5)Insolubles(Gross sample%a 0.1
Main use: it is an intermediate of dyes, can be used to manufacture Yellow R.
Packing:25kg plastic woven bag or upon clients' request.
Synonyms:4-Nitrotoluene-2-sulfonic acid;2-Methyl-5-nitrobenzenesulfonic acid;2-methyl-4-nitrobenzenesulfonic acid;
Molecular Structure:4-nitrotoluene-2-sulphonic acid 121-03-9