5,8-Dihydroxy-1,4-naphthoquinone

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: 5g
Price: $415
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

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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

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

Career Henan Chemical Co

Product: 5,8-Dihydroxy-1,4-naphthoquinone 475-38-7
Price: US $2.00/KG
Min. Order: 1g
Purity: 98%MIN
Supply Ability: ASK
Release date: 2020-01-07

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

,8-Dihydroxy-[1,4]naphthoquinone

,8-Dihydroxy-1,4-naphthalenedione

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NAPHTHAZALINE

5,8-DIHYDROXY-1,4-NAPHTHOQUINONE, TECH.

5,8-Dihydroxy-1,4-naphthoquinone,tech.90%

5,8-Dihydroxy-1,4-n

5,8-Dihydroxynaphthalene-1,4-dione

5,8-Dihydroxy-1,4-naphthoquinone,98%

5,8-Dihydroxy-1,4-naphthalenedione Naphthazarin

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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

Organic Building Blocks

Ketones

API intermediates