1,4-Naphthalenedione,2-hydroxy- CAS NO.83-72-7

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2-Hydroxy-1,4-naphoquinone Chemical Properties

mp	192-195 °C (dec.)(lit.)
Colour Index	75480
Water Solubility	2 g/L (20 ºC)
Merck	14,5393
BRN	1565260
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference	83-72-7(CAS DataBase Reference)
NIST Chemistry Reference	1,4-Naphthalenedione, 2-hydroxy-(83-72-7)
EPA Substance Registry System	1,4-Naphthalenedione, 2-hydroxy-(83-72-7)

Safety Information

MSDS Information

2-Hydroxy-1,4-naphoquinone Usage And Synthesis

Chemical Properties	Yellow crystal powder
Usage	antifungal, sunscreen, antibacterial, antineoplastic
General Description	Yellow prisms or yellow powder.
Air & Water Reactions	Insoluble in water.
Reactivity Profile	Phenols, such as 2-Hydroxy-1,4-naphoquinone, do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid. Nitrated phenols often explode when heated. Many of them form metal salts that tend toward detonation by rather mild shock.
Health Hazard	ACUTE/CHRONIC HAZARDS: 2-Hydroxy-1,4-naphoquinone may be absorbed through the skin and can cause skin irritation.
Fire Hazard	Flash point data for 2-Hydroxy-1,4-naphoquinone are not available but 2-Hydroxy-1,4-naphoquinone is probably combustible.

2-Hydroxy-1,4-naphoquinone Preparation Products And Raw materials

Preparation Products	NILE RED
Raw materials	Ammonium sulfamate-->1,4-Naphthoquinone-->1,2-NAPHTHOQUINONE