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Chemical disposal of Sudan 3

Submitted by sat on 01 November 2018

Sudan III is

Dyes, indicators and stains

It is important to be aware that dyes, indicators and stains may not be very pure, particularly in very old samples. Through their manufacture, they may contain hazardous impurities. Some dyes may be metabolised in the body to substances which are harmful. Sometimes there is limited or incomplete information regarding the hazards. Therefore, great care should be exercised when handling all dyes, indicators and stains.

Students should only use dilute solutions of dyes, indicators and stains; where the hazard is greatly reduced.

Therefore, although Sudan III is classified as non-hazardous, it should be handled with great care.

Disposal of Sudan III

Disposal of Sudan III depends upon whether it is in solid form or in solution and the quantity involved.


CLEAPSS. 2016. CLEAPSS Hazcards, Number 32 Dyes, indicators and stains, CLEAPSS website, (Member login required)

CLEAPSS. 2013. CLEAPSS Student Safety Sheets, Number 70 Dyes and indicators, CLEAPSS website,

NSW Department of Education and Training. 1999. ‘Chemical Safety in Schools (CSIS)’ resource package. Sydney: NSW

Scharlau. 2013. Sudan III, C.I. 26100, for microscopy, Safety Data Sheet, Chem-Supply website,

Proscitech. 2017. Sudan III Safety Data Sheet, Southern Biological website.,