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ChemicalBook > Product Catalog >Chemical Reagents >Organic reagents >The polycyclic compound >2-Hydroxy-1,4-naphoquinone

2-Hydroxy-1,4-naphoquinone

2-Hydroxy-1,4-naphoquinone Structure
CAS No.
83-72-7
Chemical Name:
2-Hydroxy-1,4-naphoquinone
Synonyms
LAWSONE;2-Hydroxynaphthalene-1,4-dione;2-HYDROXY-1,4-NAPHTHOQUINONE;Lawson;Henna;2-Hydroxynaphthoquinone;3-Hydroxy-1,4-naphthoquinone;Hana;Mendi;Mehendi
CBNumber:
CB2493073
Molecular Formula:
C10H6O3
Molecular Weight:
174.15
MOL File:
83-72-7.mol
MSDS File:
SDS
Modify Date:
2024/7/24 13:33:21
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2-Hydroxy-1,4-naphoquinone Properties

Melting point 192-195 °C (dec.)(lit.)
Boiling point 265.11°C (rough estimate)
Density 1.2346 (rough estimate)
refractive index 1.5036 (estimate)
storage temp. Sealed in dry,Room Temperature
solubility Acetonitrile (Slightly), Chloroform (Slightly), Methanol (Slightly)
pka 4.31±0.10(Predicted)
Colour Index 75480
form Crystalline Powder
color Yellow
Water Solubility 2 g/L (20 ºC)
Merck 14,5393
BRN 1565260
Stability Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey CSFWPUWCSPOLJW-UHFFFAOYSA-N
LogP 1.380
CAS DataBase Reference 83-72-7(CAS DataBase Reference)
NIST Chemistry Reference 1,4-Naphthalenedione, 2-hydroxy-(83-72-7)
EPA Substance Registry System 2-Hydroxy-1,4-naphthoquinone (83-72-7)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi,Xn
Risk Statements  36/37/38-68-36-22
Safety Statements  26-37/39-36/37/39-36
WGK Germany  3
RTECS  QL8200000
TSCA  Yes
HS Code  29146990
NFPA 704
1
2 0

2-Hydroxy-1,4-naphoquinone price More Price(5)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) H46805 2-Hydroxy-1,4-naphthoquinone 97% 83-72-7 10G ₹3561.43 2022-06-14 Buy
Sigma-Aldrich(India) H46805 2-Hydroxy-1,4-naphthoquinone 97% 83-72-7 25G ₹5412.5 2022-06-14 Buy
Sigma-Aldrich(India) H46805 2-Hydroxy-1,4-naphthoquinone 97% 83-72-7 100G ₹17514.85 2022-06-14 Buy
TCI Chemicals (India) H0285 2-Hydroxy-1,4-naphthoquinone 83-72-7 25G ₹2600 2022-05-26 Buy
TCI Chemicals (India) H0285 2-Hydroxy-1,4-naphthoquinone 83-72-7 100G ₹7800 2022-05-26 Buy
Product number Packaging Price Buy
H46805 10G ₹3561.43 Buy
H46805 25G ₹5412.5 Buy
H46805 100G ₹17514.85 Buy
H0285 25G ₹2600 Buy
H0285 100G ₹7800 Buy

2-Hydroxy-1,4-naphoquinone Chemical Properties,Uses,Production

Chemical Properties

Yellow crystal powder

History

Lawsone (CI Natural Orange 6; CI 75420), also known as henna and isojuglone, occurs in the shrub henna (Lawsone alba). In England, the plant is known as Egyptian privet. The dye was extracted from the leaves of the plant, using sodium bicarbonate, and the extracts used to dye protein fibers an orange shade. Henna is probably the oldest cosmetic known. The ancient Egyptians used it as a hair dye and for staining fingernails. It is said that Mohammed dyed his beard with henna. Lawsone has been identified as 2-hydroxy-1,4-naphthoquinone. It has been synthesized by the Thiele acetylation of 1,4-naphthoquinone followed by hydrolysis and oxidation.

Uses

antifungal, sunscreen, antibacterial, antineoplastic

Definition

A coloring principle obtained from dried leaves of certain tropical plants (North Africa, India).

General Description

Yellow prisms or yellow powder.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Phenols, such as 2-Hydroxy-1,4-naphoquinone, do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid. Nitrated phenols often explode when heated. Many of them form metal salts that tend toward detonation by rather mild shock.

Health Hazard

ACUTE/CHRONIC HAZARDS: 2-Hydroxy-1,4-naphoquinone may be absorbed through the skin and can cause skin irritation.

Fire Hazard

Flash point data for 2-Hydroxy-1,4-naphoquinone are not available but 2-Hydroxy-1,4-naphoquinone is probably combustible.

Contact allergens

Henna, prepared by powdering the dried leaves of henna plant (Lawsonia inermis L.), is used for coloring and conditioning hair and nails, particularly by Muslims or Hindus. It contains Lawsone, which very rarely induces contact allergy. Most dermatitis caused by “black henna” is due to PPD and derivatives

Purification Methods

Crystallise Lawsone B from *C6H6 or AcOH (m 192.5o, 195-196o). It sublimes in a vacuum (m 194o). It has UV with max at 455nm (aqueous NaOH). [Beilstein 8 H 300, 8 I 635, 8 II 344, 8 III 2543, 8 IV 2360.]

2-Hydroxy-1,4-naphoquinone Preparation Products And Raw materials

Raw materials

Ammonium sulfamate 1,4-Naphthoquinone 1,2-NAPHTHOQUINONE naphthalene-1,2,4-triyl triacetate naphthalene-1,2,4-triol
2-Naphthalenol, 1,4-dimethoxy- 1,3-DIHYDROXYNAPHTHALENE 2-METHOXY-1,4-NAPHTHOQUINONE 4-methoxynaphthalene-1,2-dione 1,2-DIHYDROXYNAPHTHALENE
2-Chloro-3-hydroxy-1,4-naphthoquinone 2-hydroxy-3-iodonaphthalene-1,4-dione 1,4-Dihydroxynaphthalene 2-Naphthol 1-Tetralone
2-Methoxynaphthalene 2-NITROTHIOPHENOL
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Preparation Products

Nile Red 2-Chloro-1,4-naphthoquinone

2-Hydroxy-1,4-naphoquinone Suppliers

Global( 384)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
MTS LABORATORIES +91-9502850231 +91-9618305753 Telangana, India 47 58 Inquiry
Synthetic Research Pharma Laboratories Pvt Ltd +91 9848023377 Hyderabad, India 116 58 Inquiry
VGS SYNTHESIS PRIVATE LIMITED +91-9866975588 +91-9866975588 Hyderabad, India 1818 58 Inquiry
Shreyasvi Lifesciences Pvt Ltd +919848346660 Telangana, India 66 58 Inquiry
Glenfin Chemicals Pvt Ltd +91-9923430013 +91-9323802458 Maharashtra, India 63 58 Inquiry
INNOVIR BIO SCIENCES PVT LTD +91-9542235312 +91-9542235312 Hyderabad, India 56 58 Inquiry
A.J Chemicals 91-9810153283 New Delhi, India 6124 58 Inquiry
CLEARSYNTH LABS LTD. +91-22-45045900 Hyderabad, India 6351 58 Inquiry
Reax Chemicals 08048372701Ext 416 Hyderabad, India 4223 58 Inquiry
Tyche Industries Limited 09849131122 Hyderabad, India 27 58 Inquiry
Supplier Advantage
MTS LABORATORIES 58
Synthetic Research Pharma Laboratories Pvt Ltd 58
VGS SYNTHESIS PRIVATE LIMITED 58
Shreyasvi Lifesciences Pvt Ltd 58
Glenfin Chemicals Pvt Ltd 58
INNOVIR BIO SCIENCES PVT LTD 58
A.J Chemicals 58
CLEARSYNTH LABS LTD. 58
Reax Chemicals 58
Tyche Industries Limited 58

Related articles

  • What is 2-Hydroxy-1,4-naphoquinone?
  • 2-Hydroxy-1,4-naphthoquinone (HNQ, C10H6O3, CAS registry No. 83-72-7) is also called Lawsone, which is a white cubic crystal.
  • Feb 14，2020

2-Hydroxy-1,4-naphoquinone Spectrum

2-Hydroxy-1,4-naphoquinone(83-72-7)MS2-Hydroxy-1,4-naphoquinone(83-72-7)1HNMR2-Hydroxy-1,4-naphoquinone(83-72-7)13CNMR2-Hydroxy-1,4-naphoquinone(83-72-7)IR12-Hydroxy-1,4-naphoquinone(83-72-7)IR2

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1,4-Naphthalenedione,2-hydroxy- 1,4-Naphthoquinone, 2-hydroxy- 2-Hydroxy-1,4-naphthalenedione 2-hydroxy-4-naphthalenedione 2-hydroxy-4-naphthoquinone Lawsone, Natural Orange 6 1,4-Dihydro-1,4-dioxo-2-hydroxynaphthalene Tetrabromozirconium 2-Hydroxy-p-naphthoquinone, 99%, pure 2-HYDROXY-P-NAPHTHOQUINONE, 94%, PURE 2-HYDROXY-1,4-NAPHTHOQUINONE, TECH. 2-Hydroxy-1,4-naphthoquinone ,98% [ pure] 2-Hydroxy-p-naphthoquinone, pure, 99% 100GR 2-Hydroxy-p-naphthoquinone, pure, 99% 25GR 2-Hydroxy-1,4- 2-HYDROXY-P-NAPHTHOQUINONE 2-Hydroxy-1,4-naphoquinone 2-HYDROXY-1,4-NAPHTHAQUINONE C.I. 75480~Lawsone lawsone (2-hydroxy-1,4-naphthoquinone) 2-HYDROXY-1,4-NAPHTHOQUINONE (LAWSONE). 2-HYDROXY-1 4-NAPHTHOQUINONE 97% 2-Hydroxy-1,4-Naphthquinone 2-Hydroxy-1,4-naphthoquinone, 98+% 2-Hydroxy-p-naphthoquinone, pure, 94% LAWSONE(P) 4-Naphthalenedione,2-hydroxy-1 C.I. Natural Orange 6 c.i.naturalorange6 Flower Of Paradise flowerofparadise Hana Hydroxynaphthoquinone, 2-hydroxy- Mehendi Mendi NATURAL ORANGE 6 CI 75480 JAROCOL LAWSONE 2-Hydroxy-1,4-naphthoquinone> Hennotannic acid 2-Hydroxy-1,4-naphthochinon 2-Hydxoxy-p-naphthoquinone 83-72-7 2-Hydroxy-1,4-naphoquinone 4-hydroxynaphthalene-1,2-dione 2-Hydroxynaphthoquinone 2-Hydroxynaphthalene-1,4-dione 3-Hydroxy-1,4-naphthoquinone 2-HYDROXY-1,4-NAPHTHOQUINONE Henna Lawson LAWSONE Phytonadione Impurity 75 2-hydroxy-1,4-napthoquinone Thiooxacillin 2 - hydroxynaphthalene - 1,4 - dione ( Lawsone ) 83-72-7 Pyridines Inhibitors