denaxdpg
1,3-Diphenylguanidine
CAS: 102-06-7
Molecular Formula: C13H13N3
denaxdpg - Names and Identifiers
denaxdpg - Physico-chemical Properties
| Molecular Formula | C13H13N3 |
| Molar Mass | 211.26 |
| Density | 1,13 g/cm3 |
| Melting Point | 146-148°C(lit.) |
| Boling Point | 170°C |
| Flash Point | 170°C |
| Water Solubility | slightly soluble |
| Solubility | Soluble in dilute inorganic acid, soluble in ethanol, chloroform, hot benzene and hot toluene, slightly soluble in water. |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | White crystal |
| Color | Pale Cream |
| Merck | 14,3324 |
| BRN | 1875653 |
| pKa | pK1:10.12 (25°C) |
| PH | 10.2 (10g/l, H2O) |
| Storage Condition | Sealed in dry,Store in freezer, under -20°C |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. Moisture sensitive. |
| Refractive Index | 1.6000 (estimate) |
| MDL | MFCD00001758 |
| Physical and Chemical Properties | melting point 146-151°C water-soluble easily soluble |
| Use | It is used as a medium speed accelerator for natural rubber and synthetic rubber, mainly used in the manufacture of rubber industrial products such as tires, rubber plates and rubber shoes. |
denaxdpg - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R62 - Possible risk of impaired fertility R25 - Toxic if swallowed |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 2 |
| RTECS | MF0875000 |
| TSCA | Yes |
| HS Code | 29252000 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 oral in rabbit: 250mg/kg |
denaxdpg - Upstream Downstream Industry
| Raw Materials | Aniline Carbon disulfide Ammonia Oxygen Ammonia |
denaxdpg - Introduction
Slightly smelling. It tastes bitter. Decompose when heated to 170 ℃. The aqueous solution is strongly alkaline. Toxic, half lethal dose (mouse, oral) 290mg/kg. It's irritating.
Last Update：2022-10-16 17:11:32
denaxdpg - Reference Information
| LogP | 2.42 at 21.1℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | used as a medium-speed accelerator for natural rubber and synthetic rubber, mainly used for manufacturing rubber industrial products such as tires, rubber plates, rubber shoes, etc. mainly used as a medium-speed accelerator for natural rubber and synthetic rubber. It is commonly used as an active agent for thiazole, thiuram and hypoiodol accelerators. When combined with accelerators DM and TMTD, it can be used for continuous vulcanization. When the second accelerator of thiazole accelerator is used, the aging resistance of vulcanizates is reduced, and appropriate antioxidant must be provided. In neoprene, the product has the function of plasticizer and plasticizer. This product is not suitable for white or light-colored products and rubber products in contact with food. Mainly used in the manufacture of tires, rubber plates, soles, industrial products, hard rubber and thick wall products. The dosage of the second accelerator is 1-2 parts, and the general dosage of the second accelerator as the thiazole accelerator is 0.1-0.5 parts. Diphenylguanidine, a derivative of diphenylguanidine, is a highly effective rust inhibitor. Diphenylguanidine is also used as plastic crosslinking agent, temperature indicator material, ore flotation additive, coating additive, polishing material additive, metal analysis reagent and building material additive. It is used as a medium-speed accelerator for natural rubber and synthetic rubber, and also as thiazole, thiuram and sulfonic acid. Activator of amide accelerator. It has the function of plasticizer and plasticizer in neoprene. Mainly used in the manufacture of tires, rubber soles and other rubber products. It is commonly used in natural glue and synthetic glue, not in latex. Mainly used in the manufacture of tires, rubber plates, rubber shoes and other rubber industrial products. Standard for acid calibration. Rubber vulcanization accelerator. Petroleum separation extractant. |
| production method | the production process of diphenylguanidine in China is to obtain diphenylthiourea by condensation of carbon disulfide and aniline, and then diphenylthiourea, lead oxide, ammonium hydroxide and ammonium sulfate are used to prepare diphenylguanidine sulfate at 40-70 ℃, which is extracted, filtered and neutralized to obtain semi-finished products. After drying and screening, the finished product accelerator D is obtained. The differences in each production process are mainly concentrated in the step of diphenylthiourea synthesis of diphenylguanidine. In the early days, the lead oxide method was used in China. Due to the poor product quality, the dust pollution of the operators (lead dust), the three wastes treatment of the mother liquor, and the yield Low issues, this method has basically ceased to be used in the late 2090 s. This method uses lead oxide as a desulfurizer, ammonia as an aminating agent, and ammonium sulfate as an extractant of diphenylguanidine. There are problems in raw material consumption and environmental protection. Switching to zinc oxide can improve the original production process. In the mid-1990s, there were reports of zinc oxide method and iron oxide method in China, but they were not popularized for various reasons and were eliminated. At present, all domestic diphenylguanidine manufacturers use the oxygen method to produce, that is, diphenylthiourea reacts with oxygen and ammonia for 8 hours to obtain diphenylguanidine. Raw material consumption quota: diphenylthiourea 1250kg/t, oxygen 240 m3, copper acetate (catalyst) 0.86kg/t, ammonia water 1000kg/t, water 252kg/t. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:46
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Raw Materials for denaxdpg