Plastics & Rubber
1,4-Polyisoprene; 2-Methyl-1,3-butadiene, homopolymer; 1,3-Butadiene, 2-methyl-, homopolymer; Betaprene H; Isoprene D; Isoprene oligomer; Isoprene polymer; Isoprene, polymers; Poly(2-methyl-1,3-butadiene); cis-1,4-Polyisoprene; trans-Polyisoprene; [ChemIDplus]
Clear colorless or light yellow liquid or beige to yellow solid; [CHEMINFO] Solid; [MSDSonline]
A major component of natural rubber; Also found in over 200 other plant species; Used to make tires, elastomers, foam rubber, shoes, etc.; [HSDB]
A complex poly(isoprene) polymer mixture of varying chain lengths, branches, isomers, and molecular weights (300-65,000) containing impurities such as catalyst residues (i.e. aluminum alkyls), terpene isomers (e.g. limonene), unsaturated polycyclic and aromatic compounds, and up to 5% additives (i.e., antioxidants); [CHEMINFO] May cause skin and respiratory sensitization after prolonged contact based on latex allergies; [eChemPortal: ERMA] Latex contains cis-1,4-polyisoprene, but the allergens that causes hypersensitivity are probably soluble proteins. [Marks, p. 359] May cause irritation; [MSDSonline]
Skin Designation (ACGIH)
0.0001 mg/m3, inhalable fraction
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