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Polystyrene

Polystyrene Structure
Polystyrene
  • CAS No.9003-53-6
  • Chemical Name:Polystyrene
  • CBNumber:CB4146768
  • Molecular Formula:[CH2CH(C6H5)]n
  • Formula Weight:2.01588
  • MOL File:9003-53-6.mol
Polystyrene Property
  • Melting point: :212 °C
  • Boiling point: :30-80 °C
  • Density  :1.06 g/mL at 25 °C
  • refractive index  :n20/D 1.5916
  • Flash point: :>230 °F
  • storage temp.  :2-8°C
  • form  :powder
  • color  :White
  • Water Solubility  :insoluble
  • Stability: :Stable. Combustible. Incompatible with strong oxidizing agents.
  • InChIKey :ZJMWRROPUADPEA-UHFFFAOYSA-N
  • Indirect Additives used in Food Contact Substances :POLYSTYRENE
  • FDA 21 CFR :175.125; 175.300; 175.320; 177.1200; 177.2600
  • CAS DataBase Reference :9003-53-6
  • EWG's Food Scores :1
  • IARC :3 (Vol. 19, Sup 7) 1987
  • NIST Chemistry Reference :Polystyrene(9003-53-6)
  • EPA Substance Registry System :Polystyrene (9003-53-6)
Safety
  • Hazard Codes  :Xi
  • Risk Statements  :41
  • Safety Statements  :26-36/37/39-24/25
  • RIDADR  :2211
  • WGK Germany  :3
  • RTECS  :WL6475000
  • TSCA  :Yes
  • HazardClass  :9
  • PackingGroup  :III
  • HS Code  :39039000
  • NFPA 704:
    0
    1 0
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal word
  • Hazard statements
  • Precautionary statements
Polystyrene Price More Price(93)
  • Brand: Sigma-Aldrich
  • Product number: 182427
  • Product name : Polystyrene
  • Purity: average Mw ~280,000 by GPC
  • Packaging: 25g
  • Price: $47.9
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 182427
  • Product name : Polystyrene
  • Purity: average Mw ~280,000 by GPC
  • Packaging: 1kg
  • Price: $192
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: NIST1478
  • Product name : Polystyrene (narrow molecular weight distribution)
  • Purity: NIST? SRM? 1478
  • Packaging: 2 g
  • Price: $585
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: NIST705A
  • Product name : Polystyrene (narrow molecular weight distribution)
  • Purity: NIST? SRM? 705a
  • Packaging: 5 g
  • Price: $610
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: NIST1479
  • Product name : Polystyrene (narrow molecular weight distribution)
  • Purity: NIST? SRM? 1479
  • Packaging: 2 g
  • Price: $677
  • Updated: 2021/03/22
  • Buy: Buy

Polystyrene Chemical Properties,Usage,Production

  • Chemical Properties Poly(styrene) is white powder or beads, or clear solid.Polystyrene is rigid with excellent dimensional stability, has good chemical resistance to aqueous solutions, and is an extremely clear material.
    Impact polystyrene contains polybutadiene added to reduce brittleness. The polybutadiene is usually dispersed as a discrete phase in a continuous polystyrene matrix. Polystyrene can be grafted onto rubber particles, which assures good adhesion between the phases.
  • Chemical Properties The specific gravity of general purpose and impact polystyrene is 1.05. It can vary for copolymers. It is higher for some specialty grades. Density varies slightly with pressure, but for practical purposes, the polymer is noncompressible. In terms of heat-resistance, deflection temperatures range from about 66 to 99 °C (170 to 215 °F), depending upon the formulation. Continuous resistance to heat for polystyrene is usually 60 to 80 °C (140 to 175 °F). Time and load have a significant influence on the useful service temperature of a part.
    Polystyrene is nontoxic when free from additives and residuals. It has no nutritive value and does not support fungus or bacterial growth. Dimensional stability of polystyrene resins is excellent. Mold shrinkage is small. The low moisture absorption (about 0.02%) allows fabricated parts to maintain dimensions and strength in humid environments.
    General-purpose polystyrene is water white, and transmission of visible light is about 90%. Modifiers reduce this property, and translucence results. The refractive index is about 1.59; critical angle about 39. Polystyrene molecules do not have the same optical properties in all directions. When molecules become oriented in a given direction during fabrication, a double refraction occurs and a birefringence effect can be observed if the part is examined through a polarized lens under a polarized light source. Injection moldings often exhibit birefringence in a random pattern.
  • Uses Containers, tubs, and trays formed from extruded impact polystyrene sheets are used for packaging a large variety of food. Biaxially oriented polystyrene film is thermoformed into blister packs, meat trays, container lids, and cookie, candy, pastry, and other food packages where clarity is required.
    Housewares is another large segment of the use of polystyrenes. Refrigerator door liners and furniture panels are typical thermoformed impact polystyrene applications. Extruded profiles of solid or foamed impact polystyrene are used for mirror or picture frames, and moldings for construction applications.
    General-purpose polystyrene is extruded either clear or embossed for room dividers, shower doors, glazings, and lighting applications. Injection molding of impact polystyrene is used for household items, such as flower pots, personal care products, and toys. General-purpose polystyrene is used for cutlery, bottles, combs, disposable tumblers, dishes, and trays. Injection blow molding can be used to convert polystyrene into bottles, jars, and other types of open containers.
    Impact polystyrene with ignition-resistant additives is used for appliance housings, such as those for television and small appliances. Structural foam impact polystyrene modified with flame-retardant additives is used for business machine housings and in furniture because of its decorability and ease of processing. Consumer electronics, such as cassettes, reels, and housings, is a fast growing area for use of polystyrenes. Medical applications include sample collectors, petri dishes, and test tubes. In an effort to make homes and other buildings more energy efficient, the use of polystyrenes in extruded foam board with flame-retardant additives for walls and under slabs has experienced exceptional growth in recent years. Used as a sheeting material, extruded foam board complies with the requirements of the major building codes as well as federal and military specifications.
  • Uses Packaging film; molded parts for automobiles, appliances, housewares, etc.; wire and cable coat- ing; food container closures; coated and laminated products; bottles; artificial grass and turfs; plastic pipe; wearing apparel (acid-dyed); fish nets; sur- gical casts; strapping; synthetic paper; reinforced plastics; nonwoven disposable filters.
  • Definition ChEBI: A polymer composed of repeating ethyl benzene groups.
  • Definition A synthetic polymer made from styrene (phenylethene). Expanded polystyrene is a rigid foam used in packing and insulation.
  • Definition poly styrene: A clear glasslike materialmanufactured by free-radicalpolymerization of phenylethene(styrene) using benzoyl peroxide asan initiator. It is used as both a thermaland electrical insulator and forpacking and decorative purposes.
  • Hazard Questionable carcinogen.
  • Industrial uses Polystyrene is brittle at room temperature,becomes soft at 80°C, and is often modified bycopolymerization. Traditionally, it is used infilm form for capacitors, and it remains competitivefor this application. Poly styrene is alsoused for coaxial-cable insulation, but in woundstrip or bead form, because the solid is not veryflexible.
  • Safety Profile Questionable carcinogen with experimental tumorigenic data by implant. When heated to decomposition it emits acrid smoke and irritating fumes. See also POLYMERS, IN SOLUBLE.
  • Purification Methods Precipitate polystyrene repeatedly from CHCl3 or toluene solution by addition of MeOH. Dry it in vacuo. [Miyasaka et al. J Phys Chem 92 249 1988.]
Polystyrene Preparation Products And Raw materials
Raw materials
Preparation Products
Global(219)Suppliers
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9003-53-6, PolystyreneRelated Search:
  • POLYSTYRENE STANDARD 2'000 CERTIFIED &
  • POLYSTYRENE, BEADS, AVERAGE DIAMETER 0.4 6UM, 10 WT. % DISPERSION IN WATER
  • MALDI VALIDATION SET POLYSTYRENE MP 500- 70000 CERTIFIED
  • POLYSTYRENE STANDARD 200'000
  • Polystyrene standard, for GPC, typical MW 2,000,000
  • Polystyrene standard, for GPC, typical MW 4,000
  • POLYSTYRENE STANDARD 650000 CERTIFIED AC C. TO DIN
  • Polystyrene standard, for GPC, typical MW 50,000
  • Polystyrene, melt index 6.0-9.0
  • HILLEX MICROCARRIER BEADS &
  • POLYSTYRENE, BEADS, AVERAGE DIAMETER 0.6 UM, 10 WT. % DISPERSION IN WATER
  • POLYSTYRENE STANDARD 250000 CERTIFIED AC C. TO DIN
  • POLYSTYRENE STANDARD KIT CONTAINING 13&
  • POLYSTYRENE STANDARD 3'000 CERTIFIED &
  • POLYSTYRENE STANDARD BROAD 350'000 CERT. REF. MAT. ACC. BAM
  • POLYSTYRENE STANDARD BROAD 206'000 CERT. REF. MAT. ACC. BAM
  • Polystyrene standard 4'000
  • POLYSTYRENE, BEADS, AVERAGE DIAMETER 0.3 UM, 10 WT. % DISPERSION IN WATER
  • POLYSTYRENE STANDARD 5'000
  • CHROMOSORB 103,80/100,50G
  • Polystyrene standard, for GPC, typical MW 35,000
  • POLYSTYRENE, SECONDARY STANDARD
  • MTO-CHROMOSORB 106, 80/100 MESH, 50GM
  • Polystyrene standard, for GPC, typical MW 600,000
  • MTO-CHROMOSORB 103, 100/120 MESH, 50GM
  • POLYSTYRENE STANDARD 10'000
  • Polystyrene standard, for GPC, typical MW 400,000
  • POLYSTYRENE STANDARD 150'000
  • CHROMOSORB 102,100/120 50G
  • POLYSTYRENE, BEADS, AVERAGE DIAMETER 1.1 UM, 10 WT. % DISPERSION IN WATERU
  • POLYSTYRENE, AVERAGE MW CA. 280,000 (GPC )
  • CHROMOSORB 106, 60/80 MESH, 50GM
  • POLYSTYRENE STANDARD 1000000 CERTIFIED A CC. TO DIN
  • POLYSTYRENE STANDARD 1'000
  • POLYSTYRENE, ISOTACTIC, AVERAGE MW CA. 4 00,000 (GPC)
  • Polystyrene standard, for GPC, typical MW 13,000
  • POLYSTYRENE STANDARD 3'000
  • Polystyrene standard, for GPC, typical MW 800
  • STANDARD MW 90000
  • General-purpose and impact modified
  • Polystyrene resins (GP/HIPS)
  • Poly(styrene), average M.W. 250.000
  • Poly(styrene), secondary standard, M.W. 288.800/ M.N. 131.500
  • polystrene standard 88'000
  • polystrene standard broad 206'000
  • polystrene standard broad 350'000
  • polystyrene latex microsphere, 0.10 micron
  • polystyrene latex microsphere, 0.20 micron
  • polystyrene latex microsphere, 0.50 micron
  • polystyrene latex microsphere, 1 micron
  • polystyrene latex microsphere, 2 micron
  • polystyrene latex microsphere, 6.0 micron
  • polystyrene latex microsphere, 75.0 micron
  • polystyrene latex microsphere, 0.75 micron
  • polystyrene latex microsphere, fluorescent, 6.0 micron
  • polystyrene solution
  • polystyrene latex microsphere, 1 micron, dry form
  • polystyrene latex microsphere, 25.0 micron