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4,4'-Thiodiphenol/Pharmaceutical Grade | high Purity/ COAS 2664-63-3

Name: 4,4'-Thiodiphenol/Pharmaceutical Grade | high Purity/ COAS 2664-63-3
Brand: Orient
SKU: pr2608241713
Price: 33 USD
Availability: InStock

TDS 3 Inquiries

Unit Price:

$33-34/G FOB

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CAS No.:

2664-63-3

Grade:

Pharmaceutical Grade

Content:

99.99%

Port:

shanghai

Brand:

Orient

Packaging:

Vial/Bottle/Bag/Carton

Price valid (until):

2026-09-24

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Qingdao Orient Chemical Co.,LTD

Company Type:

Trader

Location:

China

Payment Terms:

100% TT in advance

Average Lead Time:

10 days

Qualification:

Main Products:

pharmaceutical intermediates,peptides,electronic chemicals

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Product Description
Seller Information
Inquiry History

Description

4,4'-Thiodiphenol
Properties
Melting Point: 154‑156 °C (lit.)
Boiling Point: 328.96°C (rough estimate)
Density: 1.2618 (rough estimate)
Refractive Index: 1.5200 (estimate)
Storage Condition: Store below +30°C.
Water Solubility: Insoluble in water
pKa: 9.31±0.26(Predicted)
Form: Crystalline powder
Color: White to light brown
Sensitivity: Air Sensitive
BRN: 2050739
InChI: 1S/C12H10O2S/c13-9-1-5-11(6-2-9)15-12-7-3-10(14)4-8-12/h1-8,13-14H
InChIKey: VWGKEVWFBOUAND-UHFFFAOYSA‑N
SMILES: Oc1ccc(Sc2ccc(O)cc2)cc1
CAS Database: 2664‑63‑3(CAS DataBase Reference)
NIST Chemical Information: 4‑4'‑Thiodiphenol(2664‑63‑3)
EPA Chemical Information: Phenol, 4,4'-thiobis‑ (2664‑63‑3)
Uses and Synthesis Methods
Application
4,4'-Thiodiphenol serves as an intermediate for organic synthesis and fine chemical research. It is mainly applied in laboratory R&D and chemical manufacturing processes.
Usage
Used in organic synthesis.

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ECHEMI Editorial Reference

White, crystalline powder.
4,4'-thiodiphenol is a member of phenols. It derives from a hydride of a diphenyl sulfide.

Certificates

Basic Info

Product Name:

4,4′-Thiodiphenol

Other Name:

Phenol,4,4′-thiobis-;Phenol,4,4′-thiodi-;Phenol,p,p′-thiodi-;Phenol,p,p′-thiobis-;4,4′-Thiobis[phenol];4,4′-Thiodiphenol;p,p′-Dihydroxydiphenyl sulfide;Bis(4-hydroxyphenyl) sulfide;4,4′-Dihydroxydiphenyl sulfide;Thiobisphenol;Bis(p-hydroxyphenyl) sulfide;Bisphenol sulfide;4-(4-Hydroxyphenylthio)phenol;NSC 203030;Bis(p-hydroxyphenyl)thioether;Bisphenol T;4-(4-Hydroxyphenyl)sulfanylphenol;4,4′-Thiodbisphenol

CAS No.:

2664-63-3

Molecular Formula:

C12H10O2S

InChIKeys:

InChIKey=VWGKEVWFBOUAND-UHFFFAOYSA-N

Molecular Weight:

218.272

Exact Mass:

218.27

EC Number:

220-197-9

UNII:

NGN288M6MM

NSC Number:

203030

DSSTox ID:

DTXSID9047960

HScode:

29309070

Categories:

Blood Glucose Regulators

Characteristics

PSA:

65.76000

XLogP3:

3.34

Appearance:

White sheet crystal.

Density:

1.4±0.1 g/cm3

Melting Point:

154-156 °C

Boiling Point:

178-180 °C @ Press: 1.5 Torr

Flash Point:

219.7±23.3 °C

Refractive Index:

1.717

Vapor Pressure:

3.68E-05mmHg at 25°C

Toxicity:

LD50 orally in Rabbit: 3362 mg/kg LD50 dermal Rabbit > 10250 mg/kg

See More 4,4′-Thiodiphenol Properties 

Hazard Identification

Classification of the substance or mixture

Skin corrosion, Sub-category 1B

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Danger
Hazard statement(s)	H314 Causes severe skin burns and eye damage
Prevention	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash ... thoroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response	P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P316 Get emergency medical help immediately. P321 Specific treatment (see ... on this label). P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage	P405 Store locked up.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More 4,4′-Thiodiphenol Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
pharmaceutical intermediates,peptides,electronic chemicals

Location:
Room 102, 1st Floor, East Office Building, No. 45 Pengwan Road, Qianwan Bonded Port Area, Qingdao Zone, China (Shandong) Pilot Free Trade Zone

Payment Terms:
100% TT in advance

Average lead Time:
10 days

Total Annual Revenue:
$10 million-$25 million

Total Employees:
51-100

Year of Establishment:
2024

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We are mainly specilized in supply of pharmaceutical intermediates, electronic chemicals，food additives, and other fine chemical products.
Integrity is the foundation, quality is life. We would like to work together with you to build a greener and brighter future.

Website: orientchem.cc
Email: scarlett@orientchem.cc
WhatsApp: +86 17753254221

Inquiry History

3 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	Thiodiphenol	10.00 MT	Jun 13, 2025
South Korea	4,4'-Thiodiphenol	10 MT	Aug 24, 2026
India	4,4'- Thiodiphenol	5 MT	Sep 3, 2025

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4,4'-Thiodiphenol/Pharmaceutical Grade | high Purity/ COAS 2664-63-3

Product Description

Seller Information