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Search result for: pH INDICATORS

Table showing details for pH INDICATORS
Chemical	Category & User Codes	DG Class	DG PG	UN CAS No	Guidance notes
pH INDICATORS alizarin yellow R bromocresol green bromocresol purple bromophenol blue bromothymol blue methyl orange methyl red neutral red phenolphthalein orange IV phenol red screened methyl orange thymol blue	-	-	-	- -	These indicators are organic dyes and are normally used in minute quantities. They do not represent any particular toxicity hazard except if the solids are ingested. Phenolphthalein is used medicinally as a strong laxative. The major risk is usually the solvent used to dissolve the indicator, this is often ethanol. ALSO SEE SEPARATE LISTING FOR EACH CHEMICAL.

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