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5,8-Dihydroxy-1,4-naphthoquinone

5,8-Dihydroxy-1,4-naphthoquinone
5,8-Dihydroxy-1,4-naphthoquinone structure
CAS No.
475-38-7
Chemical Name:
5,8-Dihydroxy-1,4-naphthoquinone
Synonyms
NAPHTHAZARIN;Naphthazarone;Naphthazarine;NAPHTHAZALINE;5,8-Dihydroxy-1,4-n;5,8-Dihydroxynaphthoquinone;5,8-dihydroxy-4-naphthoquinone;5,8-HYDROXY-1,4-NAPHTHOQUINONE;5,8-DIHYDROXY-1,4-NAPHTHOQUINONE;5,8-dihydroxy-4-naphthalenedione
CBNumber:
CB8194974
Molecular Formula:
C10H6O4
Formula Weight:
190.15
MOL File:
475-38-7.mol

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

Melting point:
220-230 °C(lit.)
Boiling point:
285.64°C (rough estimate)
Density 
1.3366 (rough estimate)
refractive index 
1.5280 (estimate)
Water Solubility 
Soluble in water (5520 mg/L 25.).
BRN 
880561
CAS DataBase Reference
475-38-7(CAS DataBase Reference)
NIST Chemistry Reference
1,4-Naphthalenedione, 5,8-dihydroxy-(475-38-7)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Signal word  Warning
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

5,8-Dihydroxy-1,4-naphthoquinone price More Price(5)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 388513 5,8-Dihydroxy-1,4-naphthoquinone technical grade 475-38-7 1g $210 2018-11-20 Buy
TCI Chemical D2070 5,8-Dihydroxy-1,4-naphthoquinone >75.0%(HPLC) 475-38-7 1g $116 2018-11-22 Buy
TCI Chemical D2070 5,8-Dihydroxy-1,4-naphthoquinone >75.0%(HPLC) 475-38-7 5g $437 2018-11-22 Buy
Alfa Aesar A18930 5,8-Dihydroxy-1,4-naphthoquinone, 97% 475-38-7 1g $98.2 2018-11-13 Buy
Alfa Aesar A18930 5,8-Dihydroxy-1,4-naphthoquinone, 97% 475-38-7 5g $415 2018-11-13 Buy

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

Chemical Properties

dark purple to brown-black powder

Definition

ChEBI: A naphthoquinone that is 1,4-naphthoquinone in which the hydrogens at positions 5 and 8 are replaced by hydroxy groups.

Purification Methods

It crystallises in red-brown needles with a green shine from EtOH. It also crystallises from hexane and is further purified by sublimation at 2-10mm. [Huppert et al. J Phys Chem 89 5811 1985.] It is sparingly soluble in H2O but soluble in alkalis. The diacetate forms golden yellow prisms from CHCl3, m 192-193o and the 5,8-dimethoxy derivative has m 157o (155o) (from pet ether) [Bruce & Thompson J Chem Soc 1089 1955, IR: Schmand & Boldt J Am Chem Soc 97 447 1975, NMR: Brockmann & Zeeck Chem Ber 101 4221 1968]. The monothiosemicarbazone has m 168o(dec) from EtOH [Gardner et al. J Am Chem Soc 74 2106 1952]. [Beilstein 8 H 412, 8 III 3600.]

5,8-Dihydroxy-1,4-naphthoquinone Preparation Products And Raw materials

Raw materials

Preparation Products


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

Global( 66)Suppliers
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Mainchem Co., Ltd.
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5,8-Dihydroxy-1,4-naphthoquinone Spectrum


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