7,7,8,8-Tetracyanoquinodimethane
- CAS No.
- 1518-16-7
- Chemical Name:
- 7,7,8,8-Tetracyanoquinodimethane
- Synonyms
- TCNQ;TETRACYANOQUINODIMETHANE;Tetracyanoquinodimethan;Tetracyano p-Quinone Dimethane;TIMTEC-BB SBB000435;7,7,8,8-Tetracyanoqu;tetracyano-quinodimetha;etracyanoquinodimethane;7,7,8,8-Tetracyanodimethan;Quinodimethan, tetracyano-
- CBNumber:
- CB6306980
- Molecular Formula:
- C12H4N4
- Molecular Weight:
- 204.19
- MOL File:
- 1518-16-7.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/1/21 21:00:53
| Melting point | 287-289 °C (dec.) (lit.) |
|---|---|
| Boiling point | 332.67°C (rough estimate) |
| Density | 1.3596 (rough estimate) |
| refractive index | 1.5000 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| form | Crystalline Powder |
| color | Orange-brown to green |
| Water Solubility | insoluble |
| λmax | 395nm(CH3CN)(lit.) |
| BRN | 611604 |
| Stability | Stable. Incompatible with strong acids, strong bases, strong reducing agents, strong oxidizing agents. |
| CAS DataBase Reference | 1518-16-7(CAS DataBase Reference) |
| NIST Chemistry Reference | Propanedinitrile, 2,2'-(2,5-cyclohexadiene-1,4-diylidene)bis-(1518-16-7) |
| EPA Substance Registry System | Propanedinitrile, 2,2'-(2,5-cyclohexadiene-1,4-diylidene)bis- (1518-16-7) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS06 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H301+H311+H331 | |||||||||
| Precautionary statements | P280-P301+P310+P330-P302+P352+P312-P304+P340+P311 | |||||||||
| Hazard Codes | Xn,Xi,T | |||||||||
| Risk Statements | 22-20/21/22-23/24/25 | |||||||||
| Safety Statements | 22-24/25-36/37-26-36-45 | |||||||||
| RIDADR | 3276 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | GU4850000 | |||||||||
| Hazard Note | Irritant | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 6.1 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29269095 | |||||||||
| NFPA 704 |
|
7,7,8,8-Tetracyanoquinodimethane price More Price(12)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 157635 | 7,7,8,8-Tetracyanoquinodimethane 98% | 1518-16-7 | 5G | ₹7620 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 157635 | 7,7,8,8-Tetracyanoquinodimethane 98% | 1518-16-7 | 10G | ₹10930 | 2022-06-14 | Buy |
| TCI Chemicals (India) | T3034 | 7,7,8,8-Tetracyanoquinodimethane (purified by sublimation) | 1518-16-7 | 1G | ₹4800 | 2022-05-26 | Buy |
| ALFA India | ALF-A10779-14 | 7,7,8,8-Tetracyanoquinodimethane, 98% | 1518-16-7 | 25g | ₹30886 | 2022-05-26 | Buy |
| ALFA India | ALF-A10779-06 | 7,7,8,8-Tetracyanoquinodimethane, 98% | 1518-16-7 | 5g | ₹11700 | 2022-05-26 | Buy |
7,7,8,8-Tetracyanoquinodimethane Chemical Properties,Uses,Production
Description
7,7,8,8-tetracyanoquinodimethane (TCNQ), with a LUMO at 4.5 eV, is known for the charge-transfer salts formed by its radical anion TCNQ in?photovoltaic, light-emitting diodes, and organic field-effect transistor?devices. TCNQ and its derivatives?have been used as dopants, leading to an increase in hole mobility or to the lowering of injection?barriers. One classic example of such is the treatment of tetrathiafulvene (TTF), an electron donor with TCNQ. TFF and TCNQ form an ion pair, the TTF-TCNQ complex. This process of doping leads to the crystallisation of the ion pair into a one-dimensionally stacked polymer. This polymer consists of segregated stacks of cations and anions of the donors and the acceptors, respectively. The complex crystal is an organic semiconductor that exhibits metallic electric conductivity [1, 2].
Chemical Properties
orange to green crystalline powder
Uses
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.
Definition
ChEBI: A quinodimethane that is p-quinodimethane in which the methylidene hydrogens are replaced by cyano groups.
General Description
7,7,8,8-Tetracyanoquinodimethane (TNCQ) is a strong electron acceptor as it has four cyano groups and π-conjugation bonds that form charge transferring chains and ion radical salts which are mainly used as p-dopants for the fabrication of a variety of semiconductor applications.
7,7,8,8-Tetracyanoquinodimethane Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| Innovative | 07942565925 | Mumbai, India | 617 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6160 | 58 | Inquiry |
| Zibo Hangyu Biotechnology Development Co., Ltd | +86-0533-2185556 +8617865335152 | China | 10978 | 58 | Inquiry |
| Speranza Chemical Co., Ltd. | +86-86-075521030354 +8618688942810 | China | 801 | 55 | Inquiry |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | China | 49391 | 58 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29826 | 58 | Inquiry |
| Kindchem(Nanjing)Co.,Ltd | +86-025-025-85281586 +8618651653755 | China | 1227 | 58 | Inquiry |
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