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Home > Encyclopedia > C. I. Pigment Red 62

C. I. Pigment Red 62

C. I. Pigment Red 62 structure

C. I. Pigment Red 62 

structure
  • CAS No:

    109823-18-9

  • Chemical Name:

    C. I. Pigment Red 62

  • Synonyms:

    C. I. Pigment Red 62

C. I. Pigment Red 62 Use and Manufacturing

Methods of Manufacturing

The product is prepared by diazotizing 2, 2-methylbenzidine and R salt coupling. Reaction equation operation process Weigh 53kg o-methylbenzidine sulfate into 900L water and 140L 5mol/L hydrochloric acid, heat to 60℃, cool to 5℃, add 65.7L strict sodium nitrate solution under the liquid surface, adjust The volume is up to 2500L. Weigh 150kg of R salt into 500L of water, add 135kg of baking soda to dissolve it, add ice to adjust the volume to 5000L, 10℃. 300kg NaCl was added with stirring. Add the diazonium solution to the R salt solution within 30 minutes, perform coupling reaction, filter, and dry to obtain the product.

Uses

Used for coloring of nitrocellulose varnish, leather products and paper.

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