Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

702641

Sigma-Aldrich

Thieno[2,3-b]thiophene

95%

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C6H4S2
CAS Number:
250-84-0
Molecular Weight:
140.23
MDL number:
MFCD02824126
UNSPSC Code:
12352103
PubChem Substance ID:
329762391
NACRES:
NA.23

Quality Level

100

Assay

95%

form

liquid

refractive index

n20/D 1.668

density

1.326 g/cm3 at 25 °C

SMILES string

c1cc2ccsc2s1

InChI

1S/C6H4S2/c1-3-7-6-5(1)2-4-8-6/h1-4H

InChI key

YHBTXTFFTYXOFV-UHFFFAOYSA-N

Related Categories

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H319,H335

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

199.9 °F

Flash Point(C)

93.3 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCQ9810
MKBZ4355V
MKBN4036V
MKBJ6165V
MKBF8142V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service