Sr. No.

NAME OF RAW MATERIALS

PARAMETERS SPECIFIED

REQUIREMENTS

1

H-Acid M.W. =319
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Grayish moist material/Dry powder
  • 55%-65% for moist material
  • 78-80% for dry powder
  • 0.20% Max.
  • Clear solution in dilute alkali
  • Chromotropic acid 1% Max.
  • Koch acid 0.3% Max
  • Omega acid 0.3% Max.
  • All other impurities <1.5% Max.

2

J. Acid M. W =239
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Material/Dry powder
  • 88%-90% By coupling value Min.
  • 0.20% Max.
  • Soluble in dilute alkali
  • Iso Amino G.0.20* Max.
  • Di j. Acid 0.5% Max.
  • All other impurities <1.0% Max.

3

Cyanuric Chloride M. W=184.5
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • White crystalline powder Highly
  • lacrymatic 
  • 98% Min. 
  • 0.1% in Benzene 
  • Clear Solution in Benzene 
  • Nil
4 Sodium Naphthionate (free acid0 M.W=223
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Pinkish moist/dry material
  • 70% Min.
  • 0.2% Max.
  • Soluble in dilute alkali
  • Naphthyl amine 0.1% Ma.
  • Others 0.2% Max.
5 DASDSA M.W =370
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • Yellow moist/dry material 
  • 65% for moist material 
  • 90% for dry material 
  • 0.2% Max. 
  • Soluble in dilute alkali 
  • Di – hydro product 1% Max.
6 BDSA M.W.=344
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • Yellowish moist material 
  • 65% Min 
  • 0.2% Max 
  • Clear solution in dilute alkali 
  • Metanilic acid 0.5% Max
7 Tobias Acid M.W =223
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Light pinkish dry powder
  • 98% Min.
  • 0.2% Max
  • Soluble in dilute alkali
8 2-pyridone M.W.=196
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • Plate yellow dry powder 
  • 95% Min 
  • 0.2% Max 
  • Soluble in dilute alkali 
  • 1% Max all together
9 Vinyl Sulfone M.W=311 (ortho anisidine base)
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Off white to light gray dry powder
  • 90% Min
  • 0.5% Max.
  • Soluble in water
  • Difference between Diazo value and hydrolysis value 4% Max.
10 Vinyl Sulfone
M.W.=341 2,5-Di 
Methoxy aniline base
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • Grayish dry powder 
  • 85% Min 
  • 0.8% Max 
  • Soluble in water 
  • Difference between Diazo value and
  • hydrolysis value 3% Max.
11 Vinyl Sulfone
M.W.=325
(para cresidine)
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Grayish dry powder
  • 90% Min
  • 0.5% Max
  • Soluble in dilute alkali forming clear solution with bluish fluorescence.
  • Amino G. 0.3% Max
12 K-Acid M.W=383
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Yellowish moist material
  • 65% Min
  • 0.2% Max
  • Soluble in dilute alkali forming clear solution with bluish fluorescence
  • 1.0% Max all together
13 C-Acid M.W.=303
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Pinkish moist/dry material
  • 65% Min for moist material
  • 80% Min for dry material
  • 0.20% Max
  • Clear solution in dilute alkali with bluish 1.0% Max all together
14 Meta Ureido Anline 
M.W.=151
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • Pinkish dry powder 
  • 70% Min. 
  • 0.2% Max 
  • Clear solution in hot dilute acid 
  • 2% max Di Ureido product
15 Metanilic Acid M.W.=173
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • White to light pinkish dry powder 
  • 98% Min. 
  • 0.2% Max. 
  • Clear Solution dilute alkali 
  • Nil
16 Orthanlic Acid M.W=173
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • White to cream colored dry powder
  • 98% Min
  • 0.2% Max.
  • Clear solution in dilute alkali
  • Nil
17 5 - Sulfo Anthanilic 
Acid M.W = 217
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Pale yellow dry powder
  • 95% Min
  • 0.2% Max.
  • Clear solution in dilute alkali
  • Anthranilic acid Nil
  • Paper Chromatogram - single spot
18 Metaphenylene Diamine M.W=108
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Blackish crystalline material
  • 95% Min
  • 0.2% Max
  • Clear solution water.
  • Nil
19 Beta Naphthol 
M.W.=144
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Off-white thin-small flakes
  • 98% min set point 121 C
  • o.1% Max
  • Soluble in dilute Caustic Soda
  • 1 - Naphthol 0.3% Max.
20 Para Phenylene diamine (PPD) M.W.=108
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • White to off-white crystalline powder or lumps.
  • 99% Min.
  • 0.1% Max.
  • Soluble in water and dilute acid
  • PNA <0.1%
  • Ash content 0.1%
  • Melting point 139 - 141 C
21 MPDSA M.W = 188
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Pinkish crystalline material
  • 70% Min. sodium salt
  • 98% Min. free acid
  • 0.2% Max
  • Sodium salt soluble in water freely
  • Free acid soluble in dilute alkali
  • Single spot on Paper Chromatogram.
22 MPDSA M.W = 268
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Brownish dry material
  • 80% Min
  • 0.2% Max
  • Soluble in dilute alkali
  • 2% Max all impurities
23 Gamma Acid
M.W.=239
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
           Gray dry powder
  • 90% Min by coupling values.
  • 0.20% Max
  • Clear solution in dilute alkali
  • 1. Amino G.0.2% Max
  • 2. Dioxy Compound 0.3% Max
  • Bronner's acid 1.0% Max
  • All other impurities <1.0%
24 N -Methyl J - Acid 
M.W.=253
  1. Appearance 
  2. Assay 
  3. Insoluble 
  4. Solubility 
  5. Impurities
  • Brownish moist/dry material
  • 75% moist material 85% Min dry powder
  • 0.20% Max
  • Soluble in dilute alkali
  • Unreacted J-Acid 3% Max
  • Di J - Acid 0.5% max.
25 Sulfo Tobias Acid
M.W.=303
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Light pinkish moist material
  • 65% Min
  • 0.2% Max
  • Clear solution in dilute alkali
  • Unreacted Tobias Acid - Nil
  • 2- Napthyl amine 5- Sulfonic acid - Nil
26 Vinyl sulfone 
(para base) 
M.W =281
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Off white dry powder
  • 95% Min
  • 0.5% Max.
  • Soluble in water
  • Difference between Diazo value and Hydrolysis value -1.55 Max.
27 Bromamine Acid 
M.W.=382
  1. Appearance
  2. Assay
  3. Insoluble
  4. Solubility
  5. Impurities
  • Bright red powder
  • 90% Min
  • 0.2% Max
  • Soluble in hot dilute alkali
  • 1% Max. Unbrominated product.
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