# Product Name Chemical Name CAS No.
11

O.A.P.S.A

ORTHO AMINO PARA SULPHONIC ACID
or
2-AMINOPHENOL-4- SULFONIC ACID

 98-37-3
12

PAA2SA*

NACETYL PARA PHENELENE DI AMINE SULPHONIC ACID

 -
13

4-NADPSA

4- NITRO 4- AMINO DIPHENYLAMINE 2- SULPHONIC ACID
or
4'AMINO-4'-NITRODIPHENYLAMINE-2-SULFONIC ACID

 118-87-6 91-29-2
14

F.C.ACID

4:4' DIAMINO DIPHENYL AMINE 2 SULPHONIC ACID

 -
15

DASA

4-4' DIAMINO BENZSULFANILIDE

 -
16

4 CAP

4-CHLORO-2-AMINO PHENOL

 -
17

4-ADPSA

4-AMINO DIPHENYLAMINE 2-SULPHONIC ACID

 91-30-5
18

4-NAPSA

4-NITRO-2-AMINOPHENOL-6-SULPHONIC ACID
or
2-AMINO-4-NITROPHENOL

 99-57-0
19

4-ADPSA(NS)

4-NITRO-2-AMINOPHENOL-6-SULPHONIC ACID (Na SALT)

 -
20

4-CAPSA

4-CHLORO 2 AMINO PHENOL 6 SULPHONIC ACID

 -