Brief introduction of Orange I CAS 523-44-4
Chemical name: Orange I
CAS No.: 523-44-4
Synonyms: Alpha-Naphthol Orange
Molecular Formula: C16H11N2NaO4S
Molecular Weight: 350.32
EINECS: 208-346-6
Properties of Orange I CAS 523-44-4
Orange I / Alpha-Naphthol Orange is reddish brown powder appearance. It is soluble in water into orange red solution, and soluble in ethanol into orange solution. Acid can precipitate its aqueous solution, and sodium hydroxide can increase its red color. It is mainly used in biochemical research.
Specification of Orange I CAS 523-44-4
Item |
Standard |
Appearance |
Reddish brown powder |
Purity, % |
≥90.0 |
Loss on drying, % |
≤5.0 |
Residue on ignition, % |
17.5 - 21.5 |
pH change color |
Application of Orange I CAS 523-44-4
It can be used as an acid-base indicator, pH 7.6 (orange yellow)-8.9 (deep pink), and as a protein stain.
Packing, Delivery and Storage of Orange I CAS 523-44-4
Package: 25g/bottle or as per customer request.
Storage conditions: Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
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