626-17-5
m-Phthalodinitrile
CAS: 626-17-5
Molecular Formula: C8H4N2
626-17-5 - Names and Identifiers
626-17-5 - Physico-chemical Properties
| Molecular Formula | C8H4N2 |
| Molar Mass | 128.13 |
| Density | 0,992 g/cm3 |
| Melting Point | 163-165°C(lit.) |
| Boling Point | 288 °C |
| Flash Point | 288°C |
| Water Solubility | 0.7 g/L (20 ºC) |
| Solubility | 0.7g/l |
| Vapor Presure | 13.332Pa at 50℃ |
| Appearance | Flakes |
| Color | White to tan |
| Exposure Limit | ACGIH: TWA 5 mg/m3NIOSH: TWA 5 mg/m3 |
| BRN | 1072209 |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.6231 (estimate) |
| MDL | MFCD00001795 |
| Physical and Chemical Properties | Character: White needle crystal. melting point 160~162 ℃ boiling point 282 ℃ relative density 1.27 solubility slightly soluble in hot water, soluble in hot ethanol, ether, benzene and chloroform. |
| Use | For the preparation of plastics, synthetic fibers, pesticides (chlorothalonil) and epoxy resin curing agent |
626-17-5 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R20/22 - Harmful by inhalation and if swallowed. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | 2811 |
| WGK Germany | 1 |
| RTECS | CZ1900000 |
| TSCA | Yes |
| HS Code | 29269020 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
626-17-5 - Upstream Downstream Industry
| Raw Materials | m-Xylene Ammonia |
| Downstream Products | chlorothalonil |
626-17-5 - Nature
Open Data Verified Data
White needle crystal. The relative density was 1. 27. The melting point was 160-162 °c. Boiling Point 282 °c. Sublimation. Micro-soluble in hot water, soluble in hot ethanol, ether, benzene and chloroform.
Last Update：2024-01-02 23:10:35
626-17-5 - Preparation Method
Open Data Verified Data
M-Xylene is subjected to a gas phase ammoxidation reaction through a vanadium-chromium catalyst at 425 ° C. To obtain wet isophthalonitrile, which is washed with water, centrifuged for dehydration and dried to obtain a finished product.
Last Update：2022-01-01 10:54:54
626-17-5 - Introduction
White needle crystals (in ethanol). Soluble in benzene, ether, hot ethanol and chloroform, slightly soluble in water, insoluble in light oil.
Last Update：2022-10-16 17:27:23
626-17-5 - Use
Open Data Verified Data
The raw materials for the manufacture of plastics and synthetic fibers are also the main intermediates for the preparation of pesticide chlorothalonil.
Last Update：2022-01-01 10:54:54
626-17-5 - Safety
Open Data Verified Data
- toxic. In animal experiments, no typical spasticity was induced. Mice were intraperitoneally injected with LD0 450mg/kg. The oral LD50 of rats was greater than 5000mg/kg. The production site should be well ventilated. The operator should wear protective gear.
- The bag was packed in a plastic bag with an inner lining of the bag, and each bag was 25kg. To moisture, sunscreen. Hazardous materials shall be stored and transported according to regulations.
Last Update：2022-01-01 10:54:55
626-17-5 - Reference Information
| LogP | 1.5 at 25℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| purpose | is the raw material for preparing pesticide chlorothalonil and preservative, also used in polyurethane resin and epoxy resin curing agent isophthalonitrile is an intermediate of bactericide chlorothalonil. used in the manufacture of plastics, synthetic fibers and pesticides such as chlorothalonil. Mice were injected intraperitoneally with LD50 at 481mg/kg. for the preparation of plastics, synthetic fibers, pesticides (chlorothalonil) and epoxy resin curing agent. It is the raw material of pesticide chlorothalonil and preservative, and is also used for curing agent of polyurethane resin and epoxy resin. Packaging: 25kg/plastic woven bag. Storage and Transportation: Store in a cool, ventilated, dry place, according to the general chemical transport. |
| production method | is prepared from M-xylene by ammonia oxidation. A mixed gas consisting of M-xylene, ammonia and air was passed through a vanadium catalyst at a reaction temperature of 400-425 ° C. For a contact time of 3.1s. Isophthalonitrile with a purity of more than 91% was obtained in a yield of more than 93%. The product can also be prepared from M-dichlorobenzene and hydrocyanic acid, or isophthalic acid and ammonia. The preparation method is an ammonia oxidation method of M-xylene. That is, M-Xylene is reacted with ammonia and air in the presence of gas phase catalyst to obtain m-phthalonitrile. The process is that M-xylene enters the gasifier for gasification through a metering pump or is directly injected into the reactor in a liquid state, air enters the reactor through an air compressor through an oil separator, a filter and a heat exchanger, and liquid ammonia enters the reactor after evaporation and preheating. The ammonia oxidation reaction generally uses a fluidized bed reactor with a heat dissipation tube bundle, and the reaction temperature is 350~450. The catalyst is based on silica gel as the carrier, V-Cr as the main component. After the reaction, the gas is separated by the cyclone separator to remove the solid particles and the heat exchanger to cool down, and then enters the guide, the M-phthalonitrile is condensed and discharged continuously, and the tail gas is recovered from excess ammonia or directly to the three wastes for treatment, the crude product isophthalonitrile was obtained by centrifugal dehydration and drying, and the content of isophthalonitrile was 94% ~ 98%. If the product of high purity (≥ 98%) is to be refined, vacuum distillation, water washing or solvent extraction can be used. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:10
Supplier List
Multiple Specifications
Product Name: m-Phthalodinitrile Request for quotationCAS: 626-17-5
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
Multiple SpecificationsSpot supply
Product Name: 1,3-Dicyanobenzene Request for quotationCAS: 626-17-5
Tel: +86 19849939632
Email: 2470479589@qq.com
Mobile: +86 19849939632
QQ: 2470479589
Wechat: +86 19849939632
Product Name: m-Phthalodinitrile Request for quotation
CAS: 626-17-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 626-17-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Product Name: 1,3-Dicyanobenzene Visit Supplier Webpage Request for quotation
CAS: 626-17-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 626-17-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
Multiple Specifications
Product Name: m-Phthalodinitrile Request for quotationCAS: 626-17-5
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
Multiple SpecificationsSpot supply
Product Name: 1,3-Dicyanobenzene Request for quotationCAS: 626-17-5
Tel: +86 19849939632
Email: 2470479589@qq.com
Mobile: +86 19849939632
QQ: 2470479589
Wechat: +86 19849939632
Product Name: m-Phthalodinitrile Request for quotation
CAS: 626-17-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 626-17-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Product Name: 1,3-Dicyanobenzene Visit Supplier Webpage Request for quotation
CAS: 626-17-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 626-17-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for 626-17-5
Downstream Products for 626-17-5