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35990

Supelco

2,3-Dichloro-1,4-naphthoquinone

for spectrophotometric det. of hydrazides, ≥98.0%

Synonym(s):

Dichlon

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About This Item

Empirical Formula (Hill Notation):
C10H4Cl2O2
CAS Number:
117-80-6
Molecular Weight:
227.04
Beilstein:
1073511
EC Number:
204-210-5
MDL number:
MFCD00001677
UNSPSC Code:
41116105
PubChem Substance ID:
329755243
NACRES:
NA.21

description

algaecide

Quality Level

100

Assay

≥98.0% (AT)
≥98.0%

form

powder

quality

for spectrophotometric det. of hydrazides

technique(s)

UV/Vis spectroscopy: suitable

mp

192-195 °C
194-197 °C (lit.)

SMILES string

ClC1=C(Cl)C(=O)c2ccccc2C1=O

InChI

1S/C10H4Cl2O2/c11-7-8(12)10(14)6-4-2-1-3-5(6)9(7)13/h1-4H

InChI key

SVPKNMBRVBMTLB-UHFFFAOYSA-N

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General description

2,3-Dichloro-1,4-naphthoquinone is a potent and safe fungicide, and finds application in both agriculture and textile industry. During seed treatment, it is used as a foliage spray and is also an excellent mildew-proofing agent. Furthermore it also resists weathering.

Application

2,3-Dichloro-1,4-naphthoquinone was used in its alkaline form in the colorimetric method, used for the spectrophotometric determination of hydrazides. It may also be used for the spectrophotometric analysis of isoniazid in the presence of its hydrazones.

Pictograms

Skull and crossbonesEnvironment
GHS06,GHS09

Signal Word

Danger

Hazard Statements

H301,H315,H319,H410

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Spectrophotometric determination of isoniazid in presence of its hydrazones.
Devani MB
Journal of Pharmaceutical Sciences, 67 (5), 661-663 (1978)
Spectrophotometric determination of hydrazides with 2, 3-dichloro-1, 4-napthoquinone.
Plaizier JA
Analytical Chemistry, 48 (11), 1536-1538 (1976)
2, 3-Dichloro-1, 4-naphthoquinone
Horst WP and Felix EL.
Ind. and Eng. Chem., 35 (12), 1255-1259 (1943)
H J Kallmayer et al.
Die Pharmazie, 58(2), 104-107 (2003-03-19)
Isopropyl-alkylamines 2 react with 2,3-dichloro-1,4-naphthoquinone (1) to give red 2-chloro-3-isopropyl-alkylamino-1,4-naphthoquinones 3 and with 2,3-dichloro-1,4-naphthoquinone/acetaldehyde to give blue 2-chloro-3-isopropylalkylamino-vinyl-1,4-naphthoquinones 7. It is evident that the formation of 7 is preferred sterically to the formation of 3. The reaction between 2, 1
Angupillai Satheshkumar et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 98, 378-383 (2012-09-18)
Various spectroscopy techniques (UV-Vis, DRS, FT-IR, (1)H NMR, LC-MS) and theoretical computations have been employed to investigate the mechanism of the nucleophilic substitution reaction of 2,3-dichloronaphthoquinone (DCNQ) with para-substituted anilines in solid state under base- and solvent-free conditions against traditional
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