PBU3
Tri-n-butylphosphine
CAS: 998-40-3
Molecular Formula: C12H27P
PBU3 - Names and Identifiers
| Name | Tri-n-butylphosphine |
| Synonyms | PBU3 TBUP cytop 340 Tributylphosphane Tributyl phosphine Tri-n-butylphosphine Tributylphosphinetech TRIBUTYL PHOSPHINE (TBP) Trinbutylphosphineinhexane tributylphosphine solution Trinbutylphosphinemincolorlesslightyellowliq Zukunft nur als S15-5801 Tri-n-butylphosphine |
| CAS | 998-40-3 |
| EINECS | 213-651-2 |
| InChI | InChI=1/C12H27P/c1-4-7-10-13(11-8-5-2)12-9-6-3/h4-12H2,1-3H3 |
| InChIKey | TUQOTMZNTHZOKS-UHFFFAOYSA-N |
PBU3 - Physico-chemical Properties
| Molecular Formula | C12H27P |
| Molar Mass | 202.32 |
| Density | 0.81g/mLat 25°C(lit.) |
| Melting Point | -65 °C |
| Boling Point | 150°C50mm Hg(lit.) |
| Flash Point | 99°F |
| Water Solubility | insoluble |
| Vapor Presure | 1.9Pa at 20℃ |
| Vapor Density | 9 (vs air) |
| Appearance | liquid |
| Specific Gravity | 0.820 (20/4℃) |
| Color | Clear colorless to pale yellow |
| BRN | 1738261 |
| Storage Condition | 2-8°C |
| Stability | Stable, but pyrophoric - spontaneously inflammable in air. Incompatible with oxidizing agents. Moisture sensitive. |
| Sensitive | Moisture Sensitive/Air Sensitive |
| Refractive Index | n20/D 1.462(lit.) |
| Physical and Chemical Properties | Density 0.812 melting point -65°C boiling point 240-242°C refractive index 463 flash point 40°C water-soluble insoluble |
| Use | Is the main ligand of homogeneous catalyst used in petrochemical production, can be used as reducing agent, olefin polymerization catalyst |
PBU3 - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R34 - Causes burns R21/22 - Harmful in contact with skin and if swallowed. R17 - Spontaneously flammable in air R11 - Highly Flammable R37 - Irritating to the respiratory system R36/37/38 - Irritating to eyes, respiratory system and skin. R61 - May cause harm to the unborn child |
| Safety Description | S41 - In case of fire and / or explosion do not breathe fumes. 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. S16 - Keep away from sources of ignition. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S17 - Keep away from combustible material. S5 - Keep contents under ... (there follows the name of a liquid). S53 - Avoid exposure - obtain special instructions before use. |
| UN IDs | UN 3254 4.2/PG 1 |
| WGK Germany | 3 |
| RTECS | SZ3270000 |
| FLUKA BRAND F CODES | 10-13-23 |
| TSCA | Yes |
| HS Code | 29319090 |
| Hazard Class | 4.2 |
| Packing Group | I |
PBU3 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| preparation | tributylphosphine is industrially obtained by the reaction of phosphine and butene, and the addition reaction is a free radical mechanism, do not follow the Markov rule. PH3 3CH2 = CHCH2CH3 → P(CH2CH2CH2CH3)3 can be obtained in the laboratory by the reaction of corresponding Grignard reagent and phosphorus trichloride. 3 BuMgCl PCl3→ PBu3 3 MgCl2 |
| precautions for use | tributylphosphine is flammable and odorous, and can be used at room temperature under inert gas protection. Contact with air can undergo a free radical chain reaction to be oxidized to produce tributylphosphine oxide and butyl dibutylphosphonate. Therefore, it is usually necessary to perform purification by distillation under reduced pressure before use. |
| Application | tributylphosphine is the main ligand of homogeneous catalyst used in petrochemical production, which can be used as reducing agent, olefin polymerization catalyst, etc. tributylphosphine is an important organic phosphine ligand, which is widely used in transition metal organic synthesis. It can be used as a reducing agent to reduce and open disulfide bonds in proteins, and can also reduce carbonyl groups and epoxy groups. It can also be used as an olefin polymerization catalyst, a carbonylation catalyst for dibenzyl alcohol, and an ammonia methylation catalyst for polybutadiene, selective hydrogenation catalysts for Unsaturated Steroids. In organic synthesis, tributylphosphine can be used as a strong reducing agent or as a highly efficient catalyst. As a starting material for the reaction of various surfactants, phase transfer catalysts and bactericides. |
| category | toxic substances |
| Acute toxicity | oral-rat LD50: 750 mg/m3 |
| flammability hazard characteristics | open flame flammable; Toxic phosphorus oxide smoke generated by thermal decomposition; Spontaneous combustion in air; working with oxidants |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature, separate storage of food additives |
| extinguishing agent | dry powder, foam, carbon dioxide, sand. |
| autoignition temperature | 392 ° F. |
Last Update：2024-04-10 22:29:15
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