Name :- ink blue ( disodium salt ) Molecular formula:- c37h27n3na2o9s3 Molecular weight : - 799 Cas no : - 28983 – 56 – 4 Ci no. : - 42780 Specifications : Sr.No characteristics specifications 1. Physical appearance shiny brown crysals. 2. Shade on paper Equal to std. 3. Spectral strength 100 % + / - 5 % 4. Moisture 5 % max. 5. Ph 3.5 to 6.00. Std lot size 1000 kgs (in 25 kgs cap. Vergin hdpe blue open mouth drum).
