1,3,4,6-Tetrathiapentalene-2,5-dione

CAS 64394-45-2C4O2S4Chemical Synthesis

1,3,4,6-Tetrathiapentalene-2,5-dione (CAS 64394-45-2) is a sulphur-containing heterocyclic compound with the molecular formula C4O2S4. It serves as a valuable building block in chemical synthesis. Primarily utilised in the preparation of novel n-type materials and substituted dithiol-ones, this compound is essential for researchers in materials science and organic chemistry exploring advanced functional materials.

IUPAC: Thiapendione
Synonyms: 6-Tetrathiapentalene-2,5-dioneC4O2S4Thiapendione

Email us

1,3,4,6-Tetrathiapentalene-2,5-dione (C4O2S4) — chemical structure, CAS 64394-45-2; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksChemical SynthesisHeterocyclic Building BlocksOthersS-Containing

01 /Applications

Synthesis of n-type Materials

Used in the synthesis of n-type materials such as poly[Nax(Ni-1,1,2,2-ethenetetrathionate)], contributing to the development of advanced electronic materials.

Preparation of Dithiol-ones

Employed in the preparation of 4,5-bis(alkylthio)-1,3-dithiol-2-ones, offering pathways to new sulphur-rich organic compounds.

02 /Properties

Molecular weight	208.30
Empirical formula	C4O2S4
Assay	98%
Application	1,3,4,6-Tetrathiapentalene-2,5-dione has been used in the synthesis of:• n-type materials poly[Nax(Ni-1,1,2,2-ethenetetrathionate)]1• 4,5-bis(alkylthio)-1,3-dithiol-2-ones2
Melting point	182 °C (dec.)(lit.)

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P280Wear protective gloves, clothing and eye/face protection
P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xn
Risk statements (R)	20/21/22-36/37/38-42/43
Safety statements (S)	26-27-36/37/39

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

64394-45-2

MDL number

MFCD00010403

PubChem substance

24856816

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 1,3,4,6-Tetrathiapentalene-2,5-dione used for?

This compound is used as a building block in chemical synthesis, particularly for preparing n-type materials and substituted dithiol-ones.

What is the CAS number and formula for 1,3,4,6-Tetrathiapentalene-2,5-dione?

The CAS number is 64394-45-2 and the empirical formula is C4O2S4.

What is the purity or grade of 1,3,4,6-Tetrathiapentalene-2,5-dione?

This product is supplied at an assay of 98% purity. It is intended for chemical synthesis and research purposes.

What are the primary hazards associated with 1,3,4,6-Tetrathiapentalene-2,5-dione?

1,3,4,6-Tetrathiapentalene-2,5-dione is a warning substance. It is harmful if swallowed, in contact with skin, or if inhaled. It can cause skin irritation, allergic skin reactions, and respiratory irritation. Appropriate personal protective equipment, including a dust mask (N95), eye shields, face shields, and gloves, should be used.

How is 1,3,4,6-Tetrathiapentalene-2,5-dione packed and shipped?

As a global supplier and exporter, Tech Serve Solutions ensures appropriate packaging and shipping procedures in compliance with international regulations for chemical substances.