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Structure of 28928-97-4
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Methyl orange (C.I. 13025) is the sodium salt of p-dimethylaminoazobenzenesulfonic acid.It is an orange-colored synthetic dye, which changes color depending on the pH of the solution. It develops a red color in acidic solution and yellow color in basic solution.Methyl orange is used as a- pH indicator in the cell sapcounterstain to crystal violet in staining pollen tubescomponent of a polychrome histological stain solution indicator, such as in assays of oxalic and malonic acidsin other biomedical applications that include use in film dosimeters and as a reagent for the assay of bromide ions.
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GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H315-H319-H335
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Precautionary Statements : P261-P264-P271-P280-P302+P352-P304+P340-P362+P364-P405-P501
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Lot numbers can be found on the outside label of a product: