1,2-NAPHTHYLQUINONE (BETA-NAPHTHOQUINONE)

`1,2-NAPHTHYLQUINONE`
PRODUCT IDENTIFICATION
CAS NO.	524-42-5
EINECS NO.	208-360-2
FORMULA	C₁₀H₆O₂
MOL WT.	158.15
H.S. CODE	2914.69
TOXICITY
SYNONYMS	`beta-Naphthoquinone;`1,2-Naphthoquinone;
1,2-Naphthaquinone; 1,2-Naftochinon; o-Naphthoquinone;
DERIVATION
CLASSIFICATION
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE	dark brown powder
MELTING POINT	141 - 145 C (Decomposes)
BOILING POINT
SPECIFIC GRAVITY
SOLUBILITY IN WATER	slightly soluble (soluble in organic solvents)
pH
VAPOR DENSITY
AUTOIGNITION
NFPA RATINGS	Health: 2; Flammability: 0; Reactivity: 0
REFRACTIVE INDEX
FLASH POINT
STABILITY	Stable under ordinary conditions ( light sensitive)
APPLICATIONS
Naphthoquinone is the fundamental ring structure that is related with vitamin K activity, which can be formed by addition of long side chain substituents. Vitamin K₁(also called phytonadione or phylloquinone) is a naphthoquinone compound with phytyl side chain and methyl group at 3 and 2 position respectively. A naphthoquinone compound with prenyl units side cnain at 3 position and methyl group at 2 position is Vitamin K₂ (also called menaquinone). Menadione is a synthetic provitamin K (called Vitamin K₃) which has substituted methyl group only at 2 position on naphthoquinone ring. Vitamin K is essential to promote blood clotting factors including prothrombin, playing a role in a carboxylation reaction when glutamates converted to g-carboxyglutamates. In industrial field, naphthoquinone is used as a rubber (and polyester resins) polymerization regulator. It is used as an intermediate for pharmaceuticals and pesticides. It is used as an antimycotic agent.
SALES SPECIFICATION
APPEARANCE	dark brown powder
CONTENT	96.0% min
TRANSPORTATION
PACKING
HAZARD CLASS
UN NO.
OTHER INFORMATION
`Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26-28A-37/39-45`