ANNEXDETERMINATION OF DICHLOROMETHANE AND 1,1,1-TRICHLOROETHANE

IDENTIFICATION AND DETERMINATION OF MERCAPTOACETIC ACID IN HAIR-WAVING, HAIR-STRAIGHTENING AND DEPILATORY PRODUCTS

5.DETERMINATION (see NB)

5.1.lodometry

5.1.5.Calculation

The mercaptoaceric acid content is calculated according to the formula:

% (m/m) = 92 × n × 1001000 × 10 × m = 0,92 nmmath

where:

m

the mass (in grams) of the test portion,

n

the volume of iodine solution (5.1.2) used.