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EC number: 213-022-2
CAS number: 915-67-3
Remarks if, any
Digital pH meter
Principle of method
The pH of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system.
Temperature of 1% w/v test solution
Mean pH (RESULT)
pH determination of test item Trisodium
3-hydroxy-4-(4'-sulphonatonaphthylazo) naphthalene-2,7-disulphonate (CAS
done following OECD guideline 122. Mean pH of 1% w/v aqueous
measured with the help of pH meter and it was observed to be 9.65 at 28
test chemical was concluded to be basic in nature.
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