Acid orange 5

Acid orange 5 is a compound with formula Na(C₆H₅NHC₆H₄N=NC₆H₄SO₃). It is an azo dye. It is also used as a pH indicator; it is red in pH under 1.4, orange-yellow in pH over 3.2.

单词	Tropaeolin OO
释义	Tropaeolin OO 英语百科 Acid orange 5 Acid orange 5 is a compound with formula Na(C₆H₅NHC₆H₄N=NC₆H₄SO₃). It is an azo dye. It is also used as a pH indicator; it is red in pH under 1.4, orange-yellow in pH over 3.2.
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Tropaeolin OO

Acid orange 5