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4-Mercaptophenol

4-Mercaptophenol structure

CAS No.: 637-89-8

Chemical Name:: 4-Mercaptophenol

Synonyms: 4-HYDROXYTHIOPHENOL;4-Sulfanylphenol;hydroxybenzenethiol;4-HYDROXYBENZENETHIOL;usafb-57;USAF B-57;4MERCAPTOPHENO;PARA-THIOPHENOL;Thiohydroquinone;4-MERCAPTOPHENOL

CBNumber:: CB0365510

Molecular Formula:: C6H6OS

Molecular Weight:: 126.18

MDL Number:: MFCD00004850

MOL File:: 637-89-8.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-27 17:40:05

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4-Mercaptophenol Properties

Melting point	33-35 °C(lit.)
Boiling point	149-150 °C25 mm Hg(lit.)
Density	1.255
refractive index	1.5101 (estimate)
Flash point	>230 °F
solubility	Chloroform (Slightly), Methanol (Slightly)
form	Liquid or Low Melting Solid
pka	6.82±0.10(Predicted)
color	Clear colorless to light yellow
Water Solubility	soluble
Sensitive	Air Sensitive
BRN	2039306
Stability	Stability Air sensitive. Incompatible with oxidizing agents.
InChI	1S/C6H6OS/c7-5-1-3-6(8)4-2-5/h1-4,7-8H
InChIKey	BXAVKNRWVKUTLY-UHFFFAOYSA-N
SMILES	Oc1ccc(S)cc1
LogP	1.690 (est)
CAS DataBase Reference	637-89-8(CAS DataBase Reference)
EWG's Food Scores	1
FDA UNII	TAL4TS4AC3
NIST Chemistry Reference	4-Mercaptophenol(637-89-8)
EPA Substance Registry System	Phenol, 4-mercapto- (637-89-8)
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

Xi,C,Xn

Risk Statements

36/37/38-34-20/21/22

Safety Statements

26-36/37-45-36/37/39-36-7/9

RIDADR

2811

WGK Germany

RTECS

MX7175000

10-13-23

Hazard Note

Harmful/Irritant

HazardClass

AIR SENSITIVE, IRRITANT-HARMFUL, STENCH

HazardClass

PackingGroup

III

HS Code

29309090

Storage Class

11 - Combustible Solids

Hazard Classifications

Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

NFPA 704

	1
3		0

4-Mercaptophenol price More Price(53)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	275395	4-Mercaptophenol technical grade, 90%	637-89-8	5g	$64.6	2022-05-15	Buy
Sigma-Aldrich	275395	4-Mercaptophenol technical grade, 90%	637-89-8	25g	$298	2022-05-15	Buy
TCI Chemical	H0662	4-Hydroxybenzenethiol >97.0%(GC)(T)	637-89-8	25g	$133	2026-04-30	Buy
TRC	TRC-M254420-5G	4-Mercaptophenol	637-89-8	5g	$165	2026-06-03	Buy
TRC	TRC-M254420-1G	4-Mercaptophenol	637-89-8	1g	$97	2026-06-03	Buy

Product number	Packaging	Price	Buy
275395	5g	$64.6	Buy
275395	25g	$298	Buy
H0662	25g	$133	Buy
TRC-M254420-5G	5g	$165	Buy
TRC-M254420-1G	1g	$97	Buy

4-Mercaptophenol Chemical Properties, Uses, Production

Chemical Properties

Clear colorless to light yellow solid or liquid

Uses

4-Mercaptophenol was used as a resin monomer in the study of the different gold nanocrystal core-resin shell structures.

Uses

4-Mercaptophenol (MPH) has been used to study the adsorption of MPH on silver coated polystyrene nanospheres by time-dependent surface-enhanced Raman scattering (SERS) spectroscopy.
4-Mercaptophenol may be used in the preparation of silylated monomer, which was employed for the synthesis of hyperbranched poly(ester-imide). 4-Mercaptophenol (H-4MP) reacts with metal tert-butoxides ([M(OBu^t)₄]) to yield the following Group 4 phenoxy-thiols:

[(HOBu^t)(4MP)₃M(μ-4MP)]₂, where M = Ti, Zr, Hf
[(py)₂M(4MP)], where M = Ti, Zr; py = pyridine
[(py)(4MP)₃Hf(μ-4MP)]₂

4-Mercaptophenol may be used in the synthesis of the following:

poly(ethersulfide)s via silylation followed by polycondensation with 2,6-dichloropyridine or 3,6-dichloropyridazine
2,6-di-tertiarybutyl-4-mercaptophenol via Friedel-Craft′s alkylation with tert-butyl chloride in presence of a lewis acid

General Description

The density function theory calculations were performed to infer the IR and Raman spectra for 4-mercaptophenol molecule.

4-Mercaptophenol synthesis

Synthesis of 4-Mercaptophenol from Phenol

4-Mercaptophenol Preparation Products And Raw materials

Raw materials

4-Hydroxyphenyl thiocyanate 4-Iodophenol Potassium ethylxanthate 4-Chlorophenol 4,4'-Thiobis-phenol

Phenol 1-Methoxy-4-(methylthio)benzene Pyrrolidine 4-Aminophenol

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Preparation Products

N-(tert-Butoxycarbonyl)-L-alanine Gc-6506-wettable powder granules 4,4′-dihydroxydiphenyl disulfide Phenol, 4-[(2-methylpropyl)thio]- Ethyl 2-[(4-hydroxyphenyl)sulfanyl]acetate

(p-hydroxyphenyl)dimethylsulphonium chloride

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4-Mercaptophenol Suppliers

Global Suppliers ( 215)

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30103	84
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
Capot Chemical Co., Ltd	+86 (0) 571 85 58 67 18		China	18187	66
Beijing Ouhe Technology Co., Ltd	13552068683 13522913783	2355560935@qq.com	China	11777	60
Shanghai Longsheng chemical Co.,Ltd.	58099637 13585536065	sales@shlschem.com	China	9880	59
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42917	64
Shandong Xiya Chemical Co., Ltd	13355009207 13355009207	3007715519@qq.com	China	18722	57
Tianjin heowns Biochemical Technology Co., Ltd.	400 638 7771	sales@heowns.com	China	14412	57

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
Alfa Aesar	84
TCI (Shanghai) Development Co., Ltd.	81
Energy Chemical	61
Capot Chemical Co., Ltd	66
Beijing Ouhe Technology Co., Ltd	60
Shanghai Longsheng chemical Co.,Ltd.	59
Shanghai Hanhong Scientific Co.,Ltd.	64
Shandong Xiya Chemical Co., Ltd	57
Tianjin heowns Biochemical Technology Co., Ltd.	57

View Latest Price from 4-Mercaptophenol manufacturers

Update time	Product	Min. Order	Purity	Supply Ability	Manufacturer
2026-03-20	4-Mercaptophenol 637-89-8	1KG	99%	20 mt	Hebei Chuanghai Biotechnology Co., Ltd
2025-04-04	4-Mercaptophenol 637-89-8	1KG	98%	1ton	Henan Aochuang Chemical Co.,Ltd.
2022-02-22	4-Hydroxythiophenol 637-89-8	1KG	99.3%	100 tons	Honest Joy Holdings Limited

4-Mercaptophenol
637-89-8
99%
Hebei Chuanghai Biotechnology Co., Ltd

4-Mercaptophenol
637-89-8
98%
Henan Aochuang Chemical Co.,Ltd.

4-Hydroxythiophenol
637-89-8
$0.00
99.3%
Honest Joy Holdings Limited

4-Mercaptophenol Spectrum

4-Mercaptophenol(637-89-8)MS 4-Mercaptophenol(637-89-8)¹HNMR 4-Mercaptophenol(637-89-8)¹³CNMR 4-Mercaptophenol(637-89-8)IR1 4-Mercaptophenol(637-89-8)Raman

637-89-8 (4-Mercaptophenol) Related Search:

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C.I. 14720 Chiniofon 3-Methyl-8-quinolinesulphonyl chloride Camptothecin Series--10-hydroxycamptothecin Acid red 4

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Phenol, 4-mercapto- Phenol, p-mercapto- p-Hydroxythiophenol Thiohydroquinone USAF B-57 usafb-57 Hydroxythiophenol,94% 4-MERCAPTOPHENOL, TECH., 90% 4-HYDROXYTHIOPHENOL 99% PARA-THIOPHENOL PARA-MERCAPTOPHENOL p-hydroxyl thiophenol 4-HYDORXYTHIOPHENOL 4-Hydroxy thiophenol ,98% 4-Hydroxybenzene-1-thiol 4-Mercaptophenol,99% 4-Hydroxythiophenol,97% 4-Mercaptophenol,4-Hydroxythiophenol 4-Mercaptophenol, 4-Sulphanylphenol, 4-Hydroxyphenyl mercaptan, 4-Hydroxybenzenethiol 4MERCAPTOPHENO hydroxybenzenethiol 4-mercaptophenolate 4-Mercaptophenol technical grade, 90% 4-Mercaptophenol Vetec(TM) reagent grade, 89% 4-MERCAPTOPHENOL P-MERCAPTOPHENOL 4-Mercaptophenol, 99% 5GR Hydroquinone, monothio- monothio-hydroquinon Monothiohydroquinone 4-Hydroxybenzenethiol> 4-hydroxyphenylthiophenol TIANFUCHEM--637-89-8---4-Mercaptophenol P-hydroxyphenylthiophenol 4-HYDROXYTHIOPHENOL 4-HYDROXYBENZENETHIOL 4-Sulfanylphenol 637-89-8 HSC6H4OH C6H6O1S1 Organic Building Blocks Thiols/Mercaptans Sulfur Compounds Building Blocks Building Blocks Chemical Synthesis Organic Building Blocks Sulfur Compounds Thiols/Mercaptans Phenol&Thiophenol&Mercaptan Phenoles and thiophenoles Miscellaneous