ChemicalBook > CAS DataBase List > 5,8-Dihydroxy-1,4-naphthoquinone

5,8-Dihydroxy-1,4-naphthoquinone

Product Name
5,8-Dihydroxy-1,4-naphthoquinone
CAS No.
475-38-7
Chemical Name
5,8-Dihydroxy-1,4-naphthoquinone
Synonyms
NAPHTHAZARIN;5,8-Dihydroxynaphthoquinone;5,8-Dihydroxynaphthalene-1,4-dione;Naphthazarone;Naphthazarine;NAPHTHAZALINE;Mordant Black 37;Naphthazarin (6CI);5,8-Dihydroxy-1,4-n;5,8-dihydroxy-4-naphthoquinone
CBNumber
CB8194974
Molecular Formula
C10H6O4
Formula Weight
190.15
MOL File
475-38-7.mol
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5,8-Dihydroxy-1,4-naphthoquinone Property

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
form 
powder to crystaline
pka
6.98±0.20(Predicted)
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)
NIST Chemistry Reference
1,4-Naphthalenedione, 5,8-dihydroxy-(475-38-7)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
22-24/25-37/39-26
WGK Germany 
3
RTECS 
QL7970000
HS Code 
2914409000
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
388513
Product name
5,8-Dihydroxy-1,4-naphthoquinone
Purity
technical grade
Packaging
1g
Price
$293
Updated
2024/03/01
TCI Chemical
Product number
D2070
Product name
5,8-Dihydroxy-1,4-naphthoquinone
Purity
>75.0%(HPLC)
Packaging
1g
Price
$401
Updated
2024/03/01
TCI Chemical
Product number
D2070
Product name
5,8-Dihydroxy-1,4-naphthoquinone
Purity
>75.0%(HPLC)
Packaging
5g
Price
$406
Updated
2021/12/16
Alfa Aesar
Product number
A18930
Product name
5,8-Dihydroxy-1,4-naphthoquinone, 97%
Packaging
1g
Price
$98.2
Updated
2021/12/16
Alfa Aesar
Product number
A18930
Product name
5,8-Dihydroxy-1,4-naphthoquinone, 97%
Packaging
5g
Price
$415
Updated
2021/12/16
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5,8-Dihydroxy-1,4-naphthoquinone Chemical Properties,Usage,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.

Preparation

1,8-Dinitronaphthalene and 1,5-Dinitronaphthalene mixture or both alone and one of sulfur 40% fuming sulfuric ACID reaction, the product (5, 8 – dihydroxy – naphthoquinone) into Sulfurous acid?hydrogen salt.

Properties and Applications

ash red to black. Soluble in water for red light brown, soluble in ethanol for yellow brown, with green fluorescence. In concentrated sulfuric acid to dark yellow green, heating to rouge red, dilution after brown black precipitation. Dye aqueous solution to join sodium hydroxide to red, the air oxidation into blue.

Standard Ironing Fastness Light Fastness Fulling Persperation Fastness Soaping Water
Alkali Acid
ISO 5 6 5 4 5 5 5

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

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

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View Lastest Price from 5,8-Dihydroxy-1,4-naphthoquinone manufacturers

Zibo Hangyu Biotechnology Development Co., Ltd
Product
5,8-Dihydroxy-1,4-naphthoquinone 475-38-7
Price
US $150.00-430.00/g
Min. Order
1g
Purity
99%
Supply Ability
30
Release date
2024-07-10
Shaanxi Dideu Medichem Co. Ltd
Product
5,8-Dihydroxy-1,4-naphthoquinone 475-38-7
Price
US $1.00-22.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
100000KG
Release date
2024-08-02
Henan Aochuang Chemical Co.,Ltd.
Product
5,8-Dihydroxy-1,4-naphthoquinone 475-38-7
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1ton
Release date
2022-10-09

475-38-7, 5,8-Dihydroxy-1,4-naphthoquinoneRelated Search:

1,4-Naphthoquinone Butylated Hydroxytoluene 3-Diethylaminophenol Triclosan 1-Hydroxyethylidene-1,1-diphosphonic acid 1,3-Dihydroxyacetone Menadione sodium bisulfite Chrysin Solvent Red 43 2-[(R)-1-Acetoxy-4-methyl-3-pentenyl]-5,8-dihydroxy-1,4-naphthoquinone DEOXYSHIKONIN (BETA,BETA-DIMETHYLACRYL)SHIKONIN 2-[1-(Isobutyryloxy)-4-methyl-3-pentenyl]-5,8-dihydroxy-1,4-naphthoquinone ISOVALERYLSHIKONIN Shikonin (-)-2-(1-hydroxy-4-methyl-3-pentenyl)-5,8-dihydroxy-1,4-naphthoquinon Shikalkin 1,4-Dihydroxynaphthalene

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  • ,8-Dihydroxy-1,4-naphthalenedione
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  • 2,3-Dihydro-1,4,5,8-naphthalenetetrone
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  • 5,8-dihydroxy-4-naphthoquinone
  • 5,8-Dihydroxynaphthoquinone
  • Naphthazarine
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  • 5,8-DIHYDROXY-1,4-NAPHTHOQUINONE
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  • NAPHTHAZARIN
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  • 5,8-DIHYDROXY-1,4-NAPHTHOQUINONE, TECH.
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  • 5,8-Dihydroxynaphthalene-1,4-dione
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  • 5,8-Dihydroxy-1,4-naphthalenedione Naphthazarin
  • 5,8-dihydroxy-2,3-dihydronaphthalene-1,4-dione
  • 5,8-Dihydroxy-1,4-naphthoquinone&gt
  • 1,4-Naphthalenedione, 5,8-dihydroxy-
  • C.I.Mordant Black 37:C.I.57010
  • Mordant Black 37
  • Naphthazarin (6CI)
  • Naturally,Apoptosis,Naphthazarin,stress,microtubules,mitochondrial,AIF,Inhibitor,p21,lysosomal,inhibit,oxidative,p53-dependent,anti-tumor
  • 475-38-7
  • HO2C10H4O2
  • Carbonyl Compounds
  • C10
  • Building Blocks
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  • API intermediates