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2,4-Diaminophenol dihydrochloride

2,4-Diaminophenol dihydrochloride structure

CAS No.: 137-09-7

Chemical Name:: 2,4-Diaminophenol dihydrochloride

Synonyms: acrol;2,4-DIAMINOPHENOL HCL;2,4-DIAMINOPHENOL 2HCL;AMIDOL;dianol;Diamol;nci-c60026;Amidol >Amidol, ≥ 97.0%;AMidol , 98.0%(T)

CBNumber:: CB9120134

Molecular Formula:: C6H10Cl2N2O

Molecular Weight:: 197.06

MDL Number:: MFCD00012979

MOL File:: 137-09-7.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 03:57:37

Product description	Number	Pack Size	Price
4-Hydroxy-1,3-phenylenediammonium dichloride for synthesis	8.22331	100g	$245
4-Hydroxy-1,3-phenylenediammonium dichloride for synthesis	8.22331	250g	$602
2,4-Diaminophenol dihydrochloride 98%	230103	25g	$155
2,4-Diaminophenol dihydrochloride 98%	230103	100g	$305
Amidol >97.0%(N)(T)	D0080	25g	$31
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2,4-Diaminophenol dihydrochloride Properties

Melting point	222 °C (dec.)(lit.)
Density	1.3457 (rough estimate)
bulk density	310kg/m3
refractive index	1.5680 (estimate)
storage temp.	Store below +30°C.
solubility	275g/l
form	Crystalline Powder
color	Beige to gray-green
PH	1-2 (50g/l, H2O, 20℃)
Water Solubility	27.5 g/100 mL (15 ºC)
Merck	14,2983
BRN	3913728
Stability	Stable. Incompatible with strong oxidizing agents, acids. Heat and light sensitive.
Cosmetics Ingredients Functions	HAIR DYEING
Cosmetic Ingredient Review (CIR)	2,4-Diaminophenol dihydrochloride (137-09-7)
InChI	1S/C6H8N2O.2ClH/c7-4-1-2-6(9)5(8)3-4;;/h1-3,9H,7-8H2;2*1H
InChIKey	KQEIJFWAXDQUPR-UHFFFAOYSA-N
SMILES	Cl.Cl.Nc1ccc(O)c(N)c1
Toxicology and Carcinogenesis	NTP Technical Report on the Toxicology and Carcinogenesis Studies of 2,4-Diaminophenol Dihydrochloride (CASRN 137-09-7) in F344/N Rats and B6C3F1 Mice (Gavage Studies)
CAS DataBase Reference	137-09-7(CAS DataBase Reference)
EWG's Food Scores	3-6
FDA UNII	T1IYY101NX
EPA Substance Registry System	2,4-Diaminophenol dihydrochloride (137-09-7)
UNSPSC Code	12352107
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS06

Signal word

Danger

Hazard statements

H301-H315-H319-H335

Precautionary statements

P261-P264-P270-P301+P310-P302+P352-P305+P351+P338

target organs

Respiratory system

PPE

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Hazard Codes

Xn,Xi

Risk Statements

22-36/37/38

Safety Statements

26-36

RIDADR

UN 2811 6.1/PG 3

WGK Germany

RTECS

SK7600000

TSCA

TSCA listed

HazardClass

6.1

PackingGroup

III

HS Code

29222900

Storage Class

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

Hazard Classifications

Acute Tox. 3 Oral
Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

Hazardous Substances Data

137-09-7(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 240 mg/kg

NFPA 704

	0
3		0

2,4-Diaminophenol dihydrochloride price More Price(65)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	8.22331	4-Hydroxy-1,3-phenylenediammonium dichloride for synthesis	137-09-7	100g	$245	2026-04-30	Buy
Sigma-Aldrich	8.22331	4-Hydroxy-1,3-phenylenediammonium dichloride for synthesis	137-09-7	250g	$602	2026-04-30	Buy
Sigma-Aldrich	230103	2,4-Diaminophenol dihydrochloride 98%	137-09-7	25g	$155	2023-06-20	Buy
Sigma-Aldrich	230103	2,4-Diaminophenol dihydrochloride 98%	137-09-7	100g	$305	2022-05-15	Buy
TCI Chemical	D0080	Amidol >97.0%(N)(T)	137-09-7	25g	$31	2026-04-30	Buy

Product number	Packaging	Price	Buy
8.22331	100g	$245	Buy
8.22331	250g	$602	Buy
230103	25g	$155	Buy
230103	100g	$305	Buy
D0080	25g	$31	Buy

2,4-Diaminophenol dihydrochloride Chemical Properties,Uses,Production

Chemical Properties

Grey white powder

Uses

A trade name for diamidophenol, a developing agent for silver bromide gelatin emulsions that was introduced by Dr. Anderson in 1892. Amidol made negatives grayish black, with very little fog. It was favored over other alkaline developers because it could facilitate faster exposures.

Uses

2,4-Diaminophenol dihydrochloride (Amidol) is used in the dye manufacturing industries and as a color accelerator in photographic developers. It is also employed as a pharmaceutical intermediate.

Uses

2,4-Diaminophenol dihydrochloride (Amidol) was used in the dye manufacturing industries and as a color accelerator in photographic developers.

General Description

Grayish-white crystals.

Air & Water Reactions

Water soluble.

Reactivity Profile

Sensitive to heat and light. Incompatible with acids.

Fire Hazard

Flash point data for 2,4-Diaminophenol dihydrochloride are not available. 2,4-Diaminophenol dihydrochloride is probably combustible.

2,4-Diaminophenol dihydrochloride Preparation Products And Raw materials

Raw materials

2,4-Dinitrophenol

Preparation Products

5-Amino-2-(3-aminophenyl)benzoxazole 2-P-TOLYL-BENZOOXAZOL-5-YLAMINE 2-(4-BROMO-PHENYL)-BENZOOXAZOL-5-YLAMINE

2,4-Diaminophenol dihydrochloride Suppliers

Global( 180)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shaanxi Dideu Medichem Co. Ltd	+86-17392712779	1097@dideu.com	China	3992	58
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29812	58
Xiamen AmoyChem Co., Ltd	+86-86-5926051114	sales@amoychem.com	China	6366	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
CONIER CHEM AND PHARMA LIMITED		sales@conier.com	China	49979	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +86-189 4982 3763	sales@tnjchem.com	China	34563	58
Henan Alfa Chemical Co., Ltd	+8618339805032	sale03@alfachem.cn	China	9812	58
Hebei Fengjia New Material Co., Ltd	+86-0311-87836622 +86-18712993135	sales01@tairunfaz.com	China	8051	58
HANGZHOU LEAP CHEM CO., LTD.	+86-571-87711850 +8619957148339	market18@leapchem.com	China	24597	58
GIHI CHEMICALS CO.,LIMITED	+86-571-86217390; +8618058761490	info@gihichemicals.com	China	49895	58

Supplier	Advantage
Shaanxi Dideu Medichem Co. Ltd	58
career henan chemical co	58
Xiamen AmoyChem Co., Ltd	58
Alchem Pharmtech,Inc.	58
CONIER CHEM AND PHARMA LIMITED	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Henan Alfa Chemical Co., Ltd	58
Hebei Fengjia New Material Co., Ltd	58
HANGZHOU LEAP CHEM CO., LTD.	58
GIHI CHEMICALS CO.,LIMITED	58

View Lastest Price from 2,4-Diaminophenol dihydrochloride manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2025-12-24	2,4-Diaminophenol dihydrochloride 137-09-7		1KG	99.0%	1000KG	Shaanxi Dideu Medichem Co. Ltd
	2019-09-03	2,4-Diaminophenol dihydrochloride 137-09-7	$7.00	1KG	99%		Career Henan Chemical Co

2,4-Diaminophenol dihydrochloride
137-09-7
99.0%
Shaanxi Dideu Medichem Co. Ltd

2,4-Diaminophenol dihydrochloride
137-09-7
$7.00
99%
Career Henan Chemical Co

2,4-Diaminophenol dihydrochloride Spectrum

2,4-Diaminophenol dihydrochloride(137-09-7)MS 2,4-Diaminophenol dihydrochloride(137-09-7)¹HNMR 2,4-Diaminophenol dihydrochloride(137-09-7)IR1 2,4-Diaminophenol dihydrochloride(137-09-7)IR2 2,4-Diaminophenol dihydrochloride(137-09-7)Raman

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1-HYDROXYBENZENE-2,4-DIAMMONIUM DICHLORIDE 2,4-DIAMINOPHENOL DIHYDROCHLORIDE 2,4-DIAMINOPHENOL HYDROCHLORIDE nci-c60026 Phenol,2,4-diamino-,dihydrochloride phenol,2,4-diamino-dihydrochloride 4-HYDROXY-M-PHENYLENEDIAMINE DIHYDROCHLORIDE 4-HYDROXY-1,3-PHENYLENEDIAMMONIUM DICHLORIDE AMIDOL PHENOL-2,4-DIAMMONIUM DICHLORIDE 2,4-diamino-phenodihydrochloride 2,4-Diaminophenoldihydrochlor 4-Diaminophenol dihydrochloride Amidol 〔2,4-Diaminophenol Dihydrochloride〕 4-Hydroxy-1,3-phenylenediammonium dichloride for synthesis acrol dianol 2 4-DIAMINOPHENOL DIHYDRATE 98% 2,4-DiaminophenolDihydrochloride,>98% 4-hydroxy-m-phenylenendiamine dihydrochloride Diamol 2,4-DIAMINOPHENOL DIHYDROCHLORIDE 92% Diamidophenol hydrochloride 4-DiaMinophenol 2HCl 2,4-DiaMinophenol dihydrochloride, 98% 25GR AMidol , 98.0%(T) 4-hydroxy-m-phenylenediammonium dichloride 2,4-Diaminophenol dihydrochloride reference substance Amidol > 2,4-Diaminophenol dihydrochloride@100 μg/mL in MeOH 4-Hydroxy-m-phenylendiammoniumdichlorid 2,4-Diaminophenol diHCl 2,4-Diaminophenol Dihydrochloride (Amidol) extrapure, 98% dihydrogen 2,4-diaminophenol dichloride Phenol, 2,4-diamino-,hydrochloride (1:2) Amidol, ≥ 97.0% 2,4-DIAMINOPHENOL 2HCL 2,4-DIAMINOPHENOL HCL 137-09-7 H2N2C6H3OH2HCl C6H8N2O2HCl C6H10Cl2N2O Organic Building Blocks Building Blocks Phenols Oxygen Compounds Industrial/Fine Chemicals