Reaction products of diazotized 4’-aminoacetanilide, coupled with 6-amino-4-hydroxynaphthalene-2-sulphonic acid, subsequently hydrolyzed, diazotised and coupled with 6-amino-4-hydroxynaphthalene-2-sulphonic acid and 8-aminonaphthalene-2-sulphonic acid, potassium salts

Explosiveness

Description of key information

To determine, whether a substance could harbour explosive properties the following assessment is considered:

 Column 2 of REACH Annex VII provides the following specific rules for adaptation of the standard information requirement for explosive properties. The study does not need to be conducted if:

 •            there are no chemical groups associated with explosive properties present in the molecule, or

•         the substance contains chemical groups associated with explosive properties which include oxygen and the calculated oxygen balance is less than 200, or

•         the organic substance or a homogenous mixture of organic substances contains chemical groups associated with explosive properties, but the exothermic decomposition energy is less than 500 J/g and the onset of exothermic decomposition is below 500 °C.

 Direct Black 80:1 contains chemical groups associated to explosive properties as reported in Table R.7.1-28 ( -N=N- azo bond). However, the thermal behaviour of the substance was tested by DSC from 40° to 440°C. The onset of the decomposition is 190°C (< 500°C) and the exothermic decomposition energy is 280 J/g .Based on these considerations the explosive properties test on the substance does not need to be conducted.

Key value for chemical safety assessment

Explosiveness:

non explosive

Justification for classification or non-classification

not explosive