7,7,8,8-Tetracyanoquinodimethane, 98%

Description

CAS: 1518-16-7 | C12H4N4 | 204.192 g/mol

7,7,8,8-Tetracyanoquinodimethane is an electron-acceptor molecule used to form charge-transfer superconductors. It is an effective catalyst used for the ?-chlorination of carboxylic acids using chlorosulfonic acid; the presence of TCNQ suppresses competing free-radical chlorination.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
7,7,8,8-Tetracyanoquinodimethane is an electron-acceptor molecule used to form charge-transfer superconductors. It is an effective catalyst used for the ɑ-chlorination of carboxylic acids using chlorosulfonic acid; the presence of TCNQ suppresses competing free-radical chlorination.

Solubility
Insoluble in water.

Notes
Keep container tightly sealed. Store in cool, dry conditions in well sealed containers. Incompatible with oxidizing agents.

Specifications

Chemical Identifiers

• CAS: 1518-16-7
• Molecular Formula: C12H4N4
• Molecular Weight (g/mol): 204.192
• MDL Number: MFCD00011664
• InChI Key: PCCVSPMFGIFTHU-UHFFFAOYSA-N
• Synonym: 7,7,8,8-tetracyanoquinodimethane, tcnq, tetracyanoquinodimethane, tetracyanoquinodimethan, 2,2'-cyclohexa-2,5-diene-1,4-diylidene dimalononitrile, tetracyano-p-quinodimethane, tetracyanoquinodimethan e, quinodimethan, tetracyano, propanedinitrile, 2,2'-2,5-cyclohexadiene-1,4-diylidene bis, 7,7,8,8-tetracyano-p-quinodimethane
• PubChem CID: 73697
• ChEBI: CHEBI:52445
• IUPAC Name: 2-[4-(dicyanomethylidene)cyclohexa-2,5-dien-1-ylidene]propanedinitrile
• SMILES: C1=CC(=C(C#N)C#N)C=CC1=C(C#N)C#N

• Melting Point: ∼288°C (decomposition)
• Quantity: 25 g
• UN Number: UN3439
• Beilstein: 611604
• Solubility Information: Insoluble in water.
• Formula Weight: 204.19
• Percent Purity: 98%
• Chemical Name or Material: 7,7,8,8-Tetracyanoquinodimethane

Safety and Handling

Hazard Category	H301+H311+H331-H332
Hazard Statement	GHS H Statement H331-H302-H312 Toxic if inhaled. Harmful if swallowed. Harmful in contact with skin.
Precautionary Statement	P261-P264b-P270-P271-P280-P301+P310-P302+P352-P304+P340-P311-P312-P330-P361-P363-P501c
DOTInformation	Transport Hazard Class: 6.1; Packing Group: III; Proper Shipping Name: NITRILES, SOLID, TOXIC, N.O.S.
EINECSNumber	216-174-8
RTECSNumber	GU4850000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only