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5,8-Dihydroxy-1,4-naphthoquinone Structure

5,8-Dihydroxy-1,4-naphthoquinone

Chemical Properties

Melting point 220-230 °C(lit.)
Boiling point 285.64°C (rough estimate)
Density  1.3366 (rough estimate)
refractive index  1.5280 (estimate)
storage temp.  Sealed in dry,Room Temperature
pka 6.98±0.20(Predicted)
form  powder to crystaline
color  Dark red to Brown
Water Solubility  Soluble in water (5520 mg/L 25.).
BRN  880561
CAS DataBase Reference 475-38-7(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII S9IX5I5C0K
NIST Chemistry Reference 1,4-Naphthalenedione, 5,8-dihydroxy-(475-38-7)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H302+H312+H332-H315-H319-H335
Precautionary statements P280a-P304+P340-P305+P351+P338-P405-P501a-P261-P264-P270-P271-P280-P301+P312+P330-P302+P352+P312+P362+P364-P304+P340+P312-P305+P351+P338+P337+P313-P501
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  22-24/25-37/39-26
WGK Germany  3
RTECS  QL7970000
HS Code  2914409000
NFPA 704:
1
2 0

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5,8-Dihydroxy-1,4-naphthoquinone Chemical Properties,Usage,Production

5,8-Dihydroxy-1,4-naphthoquinone synthesis

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