Tetracyanoquinodimethane

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Names

[ CAS No. ]:
1518-16-7

[ Name ]:
Tetracyanoquinodimethane

[Synonym ]:
2-[4-(dicyanomethylidene)cyclohexa-2,5-dien-1-ylidene]propanedinitrile
(2,5-Cyclohexadiene-1,4-diylidene)-dimalononitrile
Propanedinitrile, 2,2'- (2,5-cyclohexadiene-1,4-diylidene)bis-
2,2'-cyclohexa-2,5-diene-1,4-diylidenedipropanedinitrile
7,7',8,8'-Tetracyanoquinodimethane
MFCD00011664
2,2'-(2,5-Cyclohexadiene-1,4-diylidene)dimalononitrile
2,2'-Cyclohexa-2,5-diene-1,4-diylidenedimalononitrile
Propanedinitrile, 2,2'-(2,5-cyclohexadiene-1,4-diylidene)bis-
TCNQ
Tetracyanoquinodimethane
2,2'-(Cyclohexa-2,5-diene-1,4-diylidene)dimalononitrile
2-[4-(dicyanomethylidene)cyclohexa-2,5-dienyliden]malononitrile
EINECS 216-174-8
7,7,8,8-Tetracyanoquinodimethane

Chemical & Physical Properties

[ Density]:
1.4±0.1 g/cm3

[ Boiling Point ]:
254.7±40.0 °C at 760 mmHg

[ Melting Point ]:
287-289 °C (dec.)(lit.)

[ Molecular Formula ]:
C12H4N4

[ Molecular Weight ]:
204.187

[ Flash Point ]:
99.7±21.2 °C

[ Exact Mass ]:
204.043594

[ PSA ]:
95.16000

[ LogP ]:
-0.36

[ Vapour Pressure ]:
0.0±0.5 mmHg at 25°C

[ Index of Refraction ]:
1.630

[ Stability ]:
Stable. Incompatible with strong acids, strong bases, strong reducing agents, strong oxidizing agents.

[ Water Solubility ]:
insoluble

MSDS

Click to get detail MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
GU4850000
CAS REGISTRY NUMBER :
1518-16-7
LAST UPDATED :
199701
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
C12-H4-N4
MOLECULAR WEIGHT :
204.20
WISWESSER LINE NOTATION :
L6Y DYJ AUYCN&CN DUYCN&CN

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
56 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#00796

Safety Information

[ Symbol ]:

GHS06

[ Signal Word ]:
Danger

[ Hazard Statements ]:
H301 + H311 + H331

[ Precautionary Statements ]:
P261-P280-P301 + P310-P311

[ Personal Protective Equipment ]:
dust mask type N95 (US);Eyeshields;Gloves

[ Hazard Codes ]:
Xn:Harmful;

[ Risk Phrases ]:
R20/21/22

[ Safety Phrases ]:
S22-S24/25-S36/37-S26

[ RIDADR ]:
3276

[ WGK Germany ]:
3

[ RTECS ]:
GU4850000

[ Packaging Group ]:
II

[ Hazard Class ]:
6.1

[ HS Code ]:
29269095

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • 1,4-Bis(dicyanomethylene)cyclohexane
  • 1,4-Benzenediacetonitrile,a1,a4-dichloro-a1,a4-dicyano-
  • 2,2'-(cyclohexa-2,5-diene-1,4-diylidene)dimalononitrile compound with 3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one (1:1)
  • p-Benzenedimalononitrile
  • terephthaloyl dicyanide
  • Terephthaloyl Chloride
  • 1,4-bis(dicyanobenzoyloxymethyl)benzene
  • Tetrathiafulvalene π radical cation
  • Tetracyanoquinodimethane

DownStream

  • tetrathiafulvalene 7 7 8 8-tetracyano-
  • n-benzylacetamide
  • Benzaldehyde
  • Phenol
  • Diphenyl disulfide
  • 9-Acenaphthyl[4-(dicyanomethyl)phenyl]dicyanomethane
  • Acenaphthylene
  • Triphenylgermanium hydride
  • Digermane,1,1,1,2,2,2-hexaphenyl-
  • Chlorotriphenylgermane

Customs

[ HS Code ]: 2926909090

[ Summary ]:
HS:2926909090 other nitrile-function compounds VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

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Related Compounds

  • tetracyanoquinodimethane
  • 7,7,8,8-tetracyanoquinodimethane
  • Tetrafluorotetracyanoquinodimethane
  • Diethyl-2,5-tetracyanoquinodimethane
  • 2-Fluoro-7,7,8,8-tetracyanoquinodimethane
  • 2-dodecyl-7,7,8,8-tetracyanoquinodimethane