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chemicals
  1. 1.schaffer’s acid potassium salt

(chemical name: 2-naphthalenesulfonic acid, 6-hydroxy-, monopotassium salt)

               
formula ：
                    c10h7o4sk
specifications:


item

purity by hplc
(%)

g-salt & r-salt
(%)

beta naphthol
(%)

dons
(%)

index

≥99%

≤0.3%

≤0.1%

≤0.1%
  1. 2.“tmee” brand j acid

formula:

                  c10h9no4s
structure :
             

specifications:

itme

index

appearance

light grey powder

purity

≥90%
 
   
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