POLYISOPRENE CAS 9003-31-0
Introduction：Basic information about POLYISOPRENE CAS 9003-31-0, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
POLYISOPRENE Basic information
| Product Name: | POLYISOPRENE |
| Synonyms: | 2-Methylbuta-1,3-diene, ol;isoprene homopolymer;Anti-IR, C-Terminal antibody produced in rabbit;Anti-IR antibody produced in rabbit;kinase InsR;1,4-POLYISOPRENE 10'000;1,4-POLYISOPRENE 100'000;1,4-POLYISOPRENE 150'000 |
| CAS: | 9003-31-0 |
| MF: | C5H8 |
| MW: | 68.12 |
| EINECS: | 618-362-9 |
| Product Categories: | 1,4-Polyisoprene;Alphabetic;Organic Soluble Polymers;P;POLB - POLYPolymer Standards;Polymers |
| Mol File: | 9003-31-0.mol |
POLYISOPRENE Chemical Properties
| Melting point | 64 °C |
| Boiling point | 122-142 °C(lit.) |
| density | 0.92 g/mL at 25 °C |
| refractive index | n |
| Fp | >230 °F |
| storage temp. | 2-8°C |
| form | slab/chunk |
| biological source | rabbit |
| λmax | 310-480 nm |
| Cosmetics Ingredients Functions | VISCOSITY CONTROLLING |
| InChI | InChI=1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3 |
| InChIKey | RRHGJUQNOFWUDK-UHFFFAOYSA-N |
| SMILES | C(=C)(C)C=C |
| CAS DataBase Reference | 9003-31-0 |
| EPA Substance Registry System | 1,3-Butadiene, 2-methyl-, homopolymer (9003-31-0) |
Safety Information
| Hazard Codes | T |
| Risk Statements | 60-61-10-20/21-38 |
| Safety Statements | 24/25-7/9-45-36/37-16-53 |
| RIDADR | UN 1307 3/PG 3 |
| WGK Germany | 3 |
| RTECS | VL8020000 |
| TSCA | TSCA listed |
| Storage Class | 3 - Flammable liquids |
| Hazard Classifications | Acute Tox. 4 Dermal Acute Tox. 4 Inhalation Aquatic Chronic 3 Asp. Tox. 1 Eye Irrit. 2 Flam. Liq. 3 Repr. 1B Skin Irrit. 2 STOT SE 3 |
| Hazardous Substances Data | 9003-31-0(Hazardous Substances Data) |
| Description | Polyisoprene is the polymer known as natural rubber, although it can also be manufactured. The natural rubber latex is harvested from the rubber tree, Hevea brasiliensis. This substance has a variety of natural additives, such as proteins and sugars. The polymer from the natural latex is resistant to many solvents and also is easily processed. The synthetic form of this rubber is produced from a pure isoprene solution with a stereospecific isomer to produce the more commonly used cis-l,4 isomer. These rubbers are resistant to abrasion and most solvents and are commercially used in automobile tires, adhesives, and a variety of products that come in close contact with the general public. Their use in baby bottle nipples is a good indication of the extremely low toxicity associated with these elastomers. |
| Chemical Properties | Natural rubber is the name applied to the polymer cis-1,4-polyisoprene obtained chiefly from the 4590 RUBBER, NATURAL latex of the Hevea brasiliensis tree. |
| Chemical Properties | There are two main solvents for rubber: turpentine andnaptha (petroleum). Because rubber does not dissolve easily,the material is finely divided by shredding prior to immersion.Natural rubber has been partially replaced by synthetics,particularly styrene–butadiene, as a generalpurposerubber. High resilience, low heat buildup, andeasy processing are particular advantages of natural rubberwhen it is often used in blends with synthetic polyisopreneand other elastomers. Natural rubber, alone and in combinationwith neoprene, has been rated highly for resistance towater, dimethyl sulfoxide, and some alcohols in a comparativetest of glove materials; resistance to other solvents variedfrom good to poor. Polyisoprene supports combustion. |
| Uses | Natural rubber is a vital, strategic, and irreplaceable raw material used in enormous quantities by the commercial, medical, transportation, and defense industries. At least 40,000 different products and over 400 medical devices contain natural rubber. |
| Production Methods | The latex of natural rubber is obtained from trees (Heveabrasiliensis); the actual monomer is isopentenyl pyrophosphatethat has been formed by biosynthesis. Natural rubbercontains low-molecular-weight impurities; small amounts ofsugar, fatty acids, proteins, and trace metals all play animportant part in processing. Depending on the catalyst, rubber may undergo 1,2-; 3,4-;or 1,4- additional polymerization that leads to several isomericstructures. Almost all commercial synthetic polyisoprenes are preparedfrom purified isoprene monomer by a solution process.A stereospecific catalyst, such as an Al–Ti Ziegler type, isrequired for direct polymerization to the cis-1,4 isomer. The production of the finished polymer requires twoseparate manufacturing processes: (a) formation of therawpolymer and (b) conversion of the polymer to the finishedrubber product. The first step is similar to that of plasticproduction. Large-scale operations use bulk materials in anenclosed system. |
| Definition | The major component of natural rubber, also made synthetically. Forms are stereospecific cis-1,4and trans-1,4-polyisoprene.Both can be produced synthetically by the effect of heat and pressure on isoprene in the presence of stereospecific catalysts. Nat |
| General Description | Available as part of Negative Photoresist kit 654892 |
| Industrial uses | Rubber is characterized as being a highly elastic or resilient material, and the natural product is obtained mainly as a latex from cuts in the trunks of the Hevea brasiliensis tree. The latex consists of small particles (averaging about 2500 ? units in diameter) of rubber suspended in an aqueous medium (at about 35% solids content). The system also contains about 6 to 8% nonrubber constituents, some of which are emulsifiers, naturally occurring antioxidants, and proteins. Natural rubber is used for making many types of articles. Because of its abrasion-resistant quality and low hysteresis in reinforced compounds, it is used in truck-tire tread stocks and in conveyor belts that which are employed in conveying abrasive material such as coal, crushed rock, ore, and cinders. In large tires, it has found application in carcass compounds because of the tack and building qualities of the raw polymer. It has also been used in carcass compounds because of the low heat buildup (low hysteresis) of the carcass compound vulcanizate during severe service conditions in tire usage. |
POLYISOPRENE Preparation Products And Raw materials
| Preparation Products | Neoprene adhesive-->TIRE-->Chlorinated rubber-->Double face pressure sensitive adhesive tape |
