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2,4-Dichloro-1-naphthol

2,4-Dichloro-1-naphthol structure

CAS No.: 2050-76-2

Chemical Name:: 2,4-Dichloro-1-naphthol

Synonyms: AURORA KA-5007;[for photography];2,4-DICHLORONAPHTHOL;2,4-Dichloro-1-naphthol;2,4-dichloro-1-naphthaleno;2,4-Dichloro-1-naphthol,99%;2,4-Dichloronaphthalen-1-ol;2,4-DICHLORO-1-NAPHTHOL 99%;2,4-dichloro-1-Naphthalenol;1-Naphthalenol,2,4-dichloro-

CBNumber:: CB3396885

Molecular Formula:: C10H6Cl2O

Molecular Weight:: 213.06

MDL Number:: MFCD00003931

MOL File:: 2050-76-2.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-09-12 18:52:01

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2,4-Dichloro-1-naphthol Properties

Melting point	104-107 °C(lit.)
Boiling point	305.89°C (rough estimate)
Density	1.2937 (rough estimate)
vapor density	7.3 (vs air)
refractive index	1.5500 (estimate)
storage temp.	2-8°C
solubility	pyridine: soluble5%, clear, colorless to dark yellow
form	powder
color	off-white to tan
InChI	1S/C10H6Cl2O/c11-8-5-9(12)10(13)7-4-2-1-3-6(7)8/h1-5,13H
InChIKey	HVLJEMXDXOTWLV-UHFFFAOYSA-N
SMILES	Oc1c(Cl)cc(Cl)c2ccccc12
CAS DataBase Reference	2050-76-2(CAS DataBase Reference)
FDA UNII	P44B2Y7RIO
EPA Substance Registry System	1-Naphthalenol, 2,4-dichloro- (2050-76-2)
UNSPSC Code	12352100
NACRES	NA.22

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

target organs

Respiratory system

PPE

dust mask type N95 (US), Eyeshields, Gloves

Hazard Codes

Risk Statements

36/37/38

Safety Statements

26-36

WGK Germany

TSCA

TSCA listed

HS Code

29081990

Storage Class

11 - Combustible Solids

Hazard Classifications

Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

NFPA 704

	0
2		0

2,4-Dichloro-1-naphthol price More Price(18)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	251976	2,4-Dichloro-1-naphthol 95%	2050-76-2	25g	$388	2026-04-30	Buy
TCI Chemical	D0383	2,4-Dichloro-1-naphthol [for photography] >97.0%(GC)(T)	2050-76-2	5g	$38	2026-04-30	Buy
TCI Chemical	D0383	2,4-Dichloro-1-naphthol [for photography] >97.0%(GC)(T)	2050-76-2	25g	$110	2022-04-27	Buy
Activate Scientific	AS213768	2,4-Dichloro-1-naphthol 95%	2050-76-2	1g	$56	2026-06-04	Buy
Activate Scientific	AS213768	2,4-Dichloro-1-naphthol 95%	2050-76-2	5g	$141	2026-06-04	Buy

Product number	Packaging	Price	Buy
251976	25g	$388	Buy
D0383	5g	$38	Buy
D0383	25g	$110	Buy
AS213768	1g	$56	Buy
AS213768	5g	$141	Buy

2,4-Dichloro-1-naphthol Chemical Properties, Uses, Production

Chemical Properties

beige-yellowish crystalline powder

Uses

2,4-Dichloro-1-naphthol has been used in:

spectrophotometric determination of arginine with previous modifications of the Sakaguchi reaction
guanidinoacetate and guanidinosuccinate assay of urine, an indicator of kidney dysfunction

Purification Methods

Crystallise the naphthol pKEst from MeOH. The 1-methyl ether has m 58o (from EtOH). [Beilstein 6 H 612, 6 I 308, 6 II 582, 6 III 2934, 6 IV 4233.]

2,4-Dichloro-1-naphthol synthesis

Synthesis of 2,4-Dichloro-1-naphthol from 1-Naphthol

2,4-Dichloro-1-naphthol Preparation Products And Raw materials

Raw materials

1(2H)-Naphthalenone, 2,2,4-trichloro- 1,2,3,4-Tetrachloro-1,2,3,4-tetrahydronaphthalene 1-Naphthalenol, 2-chloro- Chlorine Naphthalene

1-Naphthol Acetic acid

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Preparation Products

2-Chloro-1,4-naphthoquinone 4-Chloro-1-naphthol

2,4-Dichloro-1-naphthol Suppliers

Global Suppliers ( 89)

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
3B Pharmachem (Wuhan) International Co.,Ltd.	18930552037	3bsc@sina.com	China	15813	69
TCI (Shanghai) Development Co., Ltd.	021-67121386	Sales-CN@TCIchemicals.com	China	24512	81
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	44850	61
China DongFan Chemical Co.,LTD	86-0571-85151182		China	5681	66
Syntechem Co.,Ltd		info@syntechem.com	China	12973	57
RYSS TECH LTD	400-188-0725 +86 21 34310725 13611771617		China	1999	57
TOKYO CHEMICAL INDUSTRY CO., LTD.	03-36680489	Sales-JP@TCIchemicals.com	Japan	28364	80
TCI Europe	320-37350700	sales@tcieurope.eu	Europe	23654	75
TCI AMERICA	800-4238616	sales@tciamerica.com	Americas	23636	75

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
3B Pharmachem (Wuhan) International Co.,Ltd.	69
TCI (Shanghai) Development Co., Ltd.	81
Energy Chemical	61
China DongFan Chemical Co.,LTD	66
Syntechem Co.,Ltd	57
RYSS TECH LTD	57
TOKYO CHEMICAL INDUSTRY CO., LTD.	80
TCI Europe	75
TCI AMERICA	75

2,4-Dichloro-1-naphthol Spectrum

2,4-DICHLORO-1-NAPHTHOL(2050-76-2)MS 2,4-DICHLORO-1-NAPHTHOL(2050-76-2)¹HNMR 2,4-DICHLORO-1-NAPHTHOL(2050-76-2)¹³CNMR 2,4-DICHLORO-1-NAPHTHOL(2050-76-2)IR1 2,4-DICHLORO-1-NAPHTHOL(2050-76-2)IR2

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2,4-DICHLORONAPHTHOL 2,4-DICHLORO-1-NAPHTHOL 99% 2,4-Dichloro-1-naphthol [for photography] 2,4-Dichloronaphthalen-1-ol 2,4-Dichloro-1-naphthol,99% [for photography] 2,4-Dichloro-1-naphthol AURORA KA-5007 1-Naphthalenol,2,4-dichloro- 2,4-dichloro-1-naphthaleno 2,4-dichloro-1-Naphthalenol 2,4-Dichloro-1-naphthol [for photography]> 2,4-Dichloro-1-naphthol in isooctane 2,4-Dichloro-1-naphthol 2050-76-2 C10H6Cl2O Cl2C10H5OH Building Blocks Organic Building Blocks Phenols Oxygen Compounds Organic Building Blocks Oxygen Compounds Phenols Industrial/Fine Chemicals Aromatic Halides (substituted)