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POLYISOPRENE

Product Name
POLYISOPRENE
CAS No.
9003-31-0
Chemical Name
POLYISOPRENE
Synonyms
IR;Natural rubber;NATSYN 2210;cis-1,4-Polyisoprene rubber;Isoprene rubber;POLYISOPRENE, CIS;Trans-polyisoprene;1,3-Butadiene, 2-methyl-, homopolymer;isoprened;Kraton[R]
CBNumber
CB1382840
Molecular Formula
C5H8
Formula Weight
68.12
MOL File
9003-31-0.mol
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POLYISOPRENE Property

Melting point:
64 °C
Boiling point:
122-142 °C(lit.)
Density 
0.92 g/mL at 25 °C
refractive index 
n20/D 1.521
Flash point:
>230 °F
storage temp. 
2-8°C
form 
slab/chunk
CAS DataBase Reference
9003-31-0
EPA Substance Registry System
1,3-Butadiene, 2-methyl-, homopolymer (9003-31-0)
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Safety

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
Hazardous Substances Data
9003-31-0(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H226Flammable liquid and vapour

H304May be fatal if swallowed and enters airways

H315Causes skin irritation

H335May cause respiratory irritation

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P331Do NOT induce vomiting.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
651796
Product name
Negative photoresist I
Packaging
100ml
Price
$180
Updated
2024/03/01
Sigma-Aldrich
Product number
SAB4501556
Product name
Anti-IR antibody produced in rabbit
Purity
affinity isolated antibody
Packaging
100μG
Price
$485
Updated
2023/01/07
scipoly
Product number
706
Product name
Polyisoprene standard
Packaging
500mg
Price
$54
Updated
2024/07/03
scipoly
Product number
704
Product name
Polyisoprene standard
Packaging
500mg
Price
$54
Updated
2024/07/03
scipoly
Product number
584
Product name
Polyisoprene standard
Packaging
500mg
Price
$54
Updated
2024/07/03
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POLYISOPRENE Chemical Properties,Usage,Production

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

There are two main solvents for rubber: turpentine and naptha (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 generalpurpose rubber. High resilience, low heat buildup, and easy processing are particular advantages of natural rubber when it is often used in blends with synthetic polyisoprene and other elastomers. Natural rubber, alone and in combination with neoprene, has been rated highly for resistance to water, dimethyl sulfoxide, and some alcohols in a comparative test of glove materials; resistance to other solvents varied from good to poor. Polyisoprene supports combustion.

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.

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 (Hevea brasiliensis); the actual monomer is isopentenyl pyrophosphate that has been formed by biosynthesis. Natural rubber contains low-molecular-weight impurities; small amounts of sugar, fatty acids, proteins, and trace metals all play an important part in processing.
Depending on the catalyst, rubber may undergo 1,2-; 3,4-; or 1,4- additional polymerization that leads to several isomeric structures.
Almost all commercial synthetic polyisoprenes are prepared from purified isoprene monomer by a solution process. A stereospecific catalyst, such as an Al–Ti Ziegler type, is required for direct polymerization to the cis-1,4 isomer.
The production of the finished polymer requires two separate manufacturing processes: (a) formation of the rawpolymer and (b) conversion of the polymer to the finished rubber product. The first step is similar to that of plastic production. Large-scale operations use bulk materials in an enclosed 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

Raw materials

Preparation Products

TIRE rubber products Chlorinated rubber Neoprene adhesive Double face pressure sensitive adhesive tape
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POLYISOPRENE Suppliers

Canada 1 China 72 India 2 Japan 1 Switzerland 1 The Netherlands 1 United States 9 Global 87
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View Lastest Price from POLYISOPRENE manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
POLYISOPRENE 9003-31-0
Price
US $46.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000kg/week
Release date
2024-05-13
Yujiang Chemical (Shandong) Co.,Ltd.
Product
natural rubber
Price
US $1650.00-1200.00/T
Min. Order
10T
Purity
99.5%
Supply Ability
20T per week
Release date
2024-11-01
Hebei Shengyang Water Conservancy Engineering Co., Ltd.
Product
POLYISOPRENE 9003-31-0
Price
US $18.00/kg
Min. Order
1kg
Purity
99.9
Supply Ability
5000
Release date
2024-05-13

9003-31-0, POLYISOPRENERelated Search:

POLYISOPRENE, CHLORINATED POLY(ISOPRENE), CIS, AVERAGE M.W. 800.000 POLYISOPRENE, TRANS, AVERAGE MW CA. 410, 000 (GPC) Isotretinoin Tris(2,4-pentanedionato)chroMiuM(III) TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III) 2,4-PENTANEDIONE, SILVER DERIVATIVE Benzyl isocyanide 1,1,3,3-TETRAMETHYLBUTYL ISOCYANIDE SALCOMINE METHYL ISOCYANOACETATE DICHLORO(ETHYLENEDIAMINE)PLATINUM(II) TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III) COBALT(II) ACETYLACETONATE Aluminum acetylacetonate Ethyl isocyanoacetate TERT-BUTYL ISOCYANIDE PHENYLSELENOL

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