| Identification | Back Directory | [Name]
Poly(styrene) | [CAS]
9003-53-6 | [Synonyms]
3A
KB
r3
ps2
up1
up2
upm
up27
u625
x600
454H
475u
666u
686E
ps-b
s173
st90
k525
hf10
hf55
hf77
ht88
it40
K 525
ht88a
HT 88
Gedex
HF 10
HF 55
HF 77
fg834
hh102
hhi11
IT 40
NaPst
r3612
psv-l
sd188
psb-c
psb-s
ps200
ps209
825tv
LATEX
a3-80
168N15
A 3-80
Bp-klp
upm703
tc3-30
ps454h
sps600
srm705
srm706
st30ul
psv-l1
psv-l2
py2763
sb475k
nbs706
n4000v
kr2537
ls061a
mx4500
mx5514
mx5516
HHI 11
HH 102
HT 88A
ht91-1
ht-f76
FG 834
copalz
Dorvon
dow360
dow456
dow665
dow860
Dylene
dow1683
dylene8
dylene9
DOW 360
DOW 456
DOW 665
DOW 860
Copal Z
Esbrite
HT-F 76
HT 91-1
MX 4500
MX 5514
MX 5516
ls1028e
Lustrex
koplen2
KR 2537
LS 061A
NBS 706
N 4000V
psv-l1s
smd3500
styrexc
psb-s40
psb-s-e
prx1195
tgd5161
upm508l
ucc6863
bsb-s40
Bsb-S-E
Bustren
basfiii
Toporex
MGC34622
Basf iii
Bsb-S 40
Afcolene
825tv-ps
PS RESIN
vestyron
tmde6500
trolitul
styrongp
Polyflex
styragel
styrolux
rhodolne
shell300
Koplen 2
LS 1028E
esbrite2
esbrite4
esbrite8
denkaqp3
dylene8g
Dylene 9
DOW 1683
Dylene 8
Dylene 8G
dowmx5514
dowmx5516
dylark250
dylitef40
Denka qp3
diarex43g
cosden550
cadco0115
carinexgp
carinexhr
Esbrite 2
Esbrite 4
Esbrite 8
edistirrb
fc-my5450
hostyrenn
hostyrens
Hi-styrol
krastensb
mx5517-02
owispolgf
styroflex
styrofoam
styron475
styron492
styron666
stryon686
styrafoil
printel’s
Printel'S
styronps3
styropian
vestyronn
bicoleneh
bdh29-790
styron678
styron679
styron683
styron685
styron690
styron666u
styron666v
styrofan2d
BDH 29-790
Bactolatex
Bicolene H
POLYSTRENE
styront679
styropolka
toporex830
toporex500
vestyronmb
Polystyrol
polystrold
sternite30
styron475d
styron440a
styron470a
Owispol gf
MX 5517-02
lustrexh77
Krasten sb
krasten052
krasten1.4
lacqren506
lacqren550
Hostyren N
Hostyren S
FC-MY 5450
esbriteg10
esbritelbl
carinexhrm
Carinex gp
Carinex hr
cosden945e
Diarex 43G
Cadco 0115
Cosden 550
diarexhf55
diarexhs77
diarexht88
diarexht90
dylitef40l
Edistir rb
Dylark 250
Dylite F 40
diarexyh476
diarexht88a
diarexht190
diarexht500
dorvonfr100
DOW MX 5514
DOW MX 5516
Cosden 945E
Carinex hrm
carinexsb59
carinexsb61
bustrenu825
bustreny825
esbriteg-p2
esbrite4-62
Esbrite lbl
estyreneh61
escorez7404
estyreneg15
estyreneg20
Lacqren 506
Lacqren 550
Krasten 052
Krasten 1.4
kb(polymer)
km(polymer)
pelaspan333
Piccolastic
lustrexhp77
lustrexht88
styrocellpm
polyco220ns
Polystrol D
trycite1000
styropolibe
vinamuln710
vestyron512
ubatolu2001
POLYSTYRENE
bustrenk500
afcolene666
styron69021
afcolenes100
Afcolene 666
'LGC' (2012)
vinamuln7700
Polyco 220ns
ps1(polymer)
ps2(polymer)
ps5(polymer)
styron666k27
rexolite1422
oligostyrene
Pelaspan 333
piccolastica
piccolasticd
lustrexhh101
Lustrex H 77
estyreneg-p4
estyrene4-62
Esbrite G 10
Esbrite 4-62
esbrite500hm
Escorez 7404
bustreny3532
carinexsl273
Diarex hf 55
Diarex hs 77
Diarex ht 88
Diarex ht 90
Dylite F 40L
Dorvon fr 100
Diarex yh 476
Diarex ht 88A
Diarex ht 190
Diarex ht 500
carinextgx/mf
Carinex sb 59
Carinex sb 61
Esbrite 500hm
Esbrite G-P 2
estyrene500sh
Estyrene 4-62
Estyrene G 15
Estyrene G 20
Estyrene H 61
hostyrenn7001
hostyrenn4000
Lustrex hp 77
Lustrex ht 88
piccolastica5
Piccolastic D
Piccolastic A
Poligostyrene
polystyrenebw
styropoljq300
styropolht500
toporex850-51
toporex855-51
toporex550-02
bextrenexl750
bicolastica75
Bustren Y 825
Bustren U 825
bio-beadss-s2
Bustren K 500
STYRENE RESIN
STYRENE LATEX
POLYSTYRENE 75
Bustren Y 3532
bustrenk525-19
Afcolene S 100
styropianfh105
vestyron114-12
vestolenp5232g
Polystyrene bw
piccolastice75
sternitest30vl
piccolastica50
piccolastica75
piccolastica25
Lustrex hh 101
hostyrenn4000v
fostergrant834
Estyrene G-P 4
Estyrene 500sh
Carinex sl 273
Carinex tgx/mf
bustrenu825e11
diarexhf55-247
Hostyren N 7001
Hostyren N 4000
piccolasticc125
Piccolastic A 5
pelaspanesp109s
styrenepolymers
piccolasticd125
piccolasticd150
piccolastice100
piccolastice200
POLYSTYRENE 500
Bio-beads S-S 2
Bextrene xl 750
Bicolastic A 75
bakelitesmd3500
POLYSTYRENE 200
STYRENE POLYMER
POLYSTYRENE 100
Bustren K 525-19
Bustren U 825E11
Piccolastic E 75
Piccolastic A 25
Piccolastic A 50
Piccolastic A 75
piccolasticd-100
Hostyren N 4000V
Foster grant 834
Diarex hf 55-247
Piccolastic C 125
Piccolastic D 125
Piccolastic D 150
Piccolastic D-100
Piccolastic E 100
Piccolastic E 200
Pelaspan esp 109s
Bakelite smd 3500
POLYSTYRENE 5'000
POLYSTYRENE LATEX
POLYSTYRENE RESIN
POLYSTYRENE 1'000
POLYSTYRENE 2'000
POLYSTYRENE 3'000
POLYSTYRENE BEADS
POLYSTYRENEFIBRES
POLYSTYRENE,LOWMW
IMPACTPOLYSTYRENE
STANDARD MW 90000
vinylproductsr3612
POLYSTYRENE 30'000
POLYSTYRENE 20'000
POLYSTYRENE 70'000
Polymer of styrene
POLYSTYRENE 10'000
atacticpolystyrene
Atactic polystyrene
POLYSTYRENE 100'000
POLYSTYRENE 500'000
POLYSTYRENE 700'000
POLYSTYRENE 200'000
POLYSTYRENE 300'000
POLYSTYRENE 150'000
vinylbenzenepolymer
REXOLITE 1422 SHEET
POLYSTYRENE, ATACTIC
POLYSTYRENEPARTICLES
polystyrene solution
POLYSTYRENE STANDARD
POLYSTYRENE 1'000'000
POLYSTYRENE 8'000'000
POLYSTYRENE 4'000'000
POLYSTYRENE 2'000'000
POLYSTYRENE HYDANTOIN
Polystyrene,impregnated
POLYSTYRENEMICROSPHERES
POLYSTYRENE CARBOXYLATE
polystyrenepolymerlatex
polystyrenenanoparticles
POLYDISPERSE POLYSTYRENE
POLYSTYRENE STANDARD 500
CHROMOSORB 103,80/100,50G
Styrene Resin (Low M.Wt.)
Styrene Resin (Med.M.Wt.)
Styrene emulsion adhesive
polymericbeads,expandable
ethenylbenzenehomopolymer
ethenyl-benzenhomopolymer
Ethenylbenzene homopolymer
POLYSTYRENE MELT INDEX 14
Styrene Resin (High M.Wt.)
POLYSTYRENE STANDARD 2'000
Polystyrene standard 4'000
POLYSTYRENE STANDARD 5'000
CHROMOSORB 102,100/120 50G
POLYSTYRENE STANDARD 1'000
POLYSTYRENE STANDARD 3'000
polystrene standard 88'000
Polythrene(Melt flow rate)
POLYSTYRENE STANDARD 20'000
CHROMOSORB 101, 100/120,50G
POLYSTYRENE STANDARD 70'000
POLYSTYRENE STANDARD 10'000
POLYSTYRENE STANDARD 30'000
polystyrene standard 500000
polystyrene standard 650000
polystyrene standard 700000
polystyrene standard 300000
polystyrene standard 4000000
polystyrene standard 1000000
polystyrene standard 2000000
polystyrene standard 8000000
POLYSTYRENE STANDARD 100'000
POLYSTYRENE STANDARD 200'000
POLYSTYRENE STANDARD 150'000
Polystyrene, M.W. ca 100,000 | [EINECS(EC#)]
202-851-5 | [Molecular Formula]
H2 | [MDL Number]
MFCD00084450 | [MOL File]
9003-53-6.mol | [Molecular Weight]
2.01588 |
| Chemical Properties | Back Directory | [Appearance]
white powder or beads, or clear solid | [Melting point ]
212 °C
| [Boiling point ]
30-80 °C | [density ]
1.06 g/mL at 25 °C
| [refractive index ]
n20/D 1.5916
| [Fp ]
>230 °F
| [storage temp. ]
2-8°C
| [solubility ]
Chloroform (Slightly, Sonicated) | [form ]
powder
| [color ]
White | [Stability:]
Stable. Combustible. Incompatible with strong oxidizing agents. | [Water Solubility ]
insoluble | [Dielectric constant]
24.0（Ambient） | [InChIKey]
ZJMWRROPUADPEA-UHFFFAOYSA-N | [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.
| [CAS DataBase Reference]
9003-53-6 | [IARC]
3 (Vol. 19, Sup 7) 1987 | [NIST Chemistry Reference]
Polystyrene(9003-53-6) | [EPA Substance Registry System]
Benzene, ethenyl-, homopolymer(9003-53-6) |
| Hazard Information | Back Directory | [Chemical Properties]
white powder or beads, or clear solid | [Definition]
ChEBI: A polymer composed of repeating ethyl benzene groups. | [Hazard]
Questionable carcinogen.
| [Preparation]
Styrene may be polymerized by means of all four techniques by bulk, solution, suspension and emulsion polymerization.
Each of these methods is practised commercially, but solution polymerization is now the most extensively used. The four processes are described below.
(a) Bulk polymerization
In a common type of process, styrene is partially polymerized batch-wise by
heating the monomer (without added initiator) in large vessels at about 80°C
for 2 days until about 35% conversion is attained. The viscous solution of
polymer in monomer is then fed continuously into the top of a tower which is
some 25 feet high. The top of the tower is maintained at a temperature of
about 100°C, the centre at about 150°C and the bottom at about 180°C. As
the feed material traverses the temperature gradient, polymerization occurs
and fully polymerized material emerges from the base of the tower. The
reaction is controlled by a complex array of heating and cooling jackets and
coils with which the tower is fitted. The molten material is fed into an
extruder, extruded as filament and then cooled and chopped into granules.
Since the product contains few impurities, it has high clarity and good
electrical insulation properties. The polymer has a broader molecular weight
distribution than polymer prepared at one temperature.
(b) Solution polymerization
Continuous solution processes have found wide commercial utilization, the
main advantage over bulk methods being a lessening of the problems
associated with the movement and heat transfer of viscous masses. However,
the technique does require the added steps of solvent removal and recovery.
Typically, a mixture of monomer, solvent (3-12% ethylbenzene) and initiator
is fed into a train of three polymerization reactors, each with several heating
zones. The reaction temperature is progressively increased, rising from
110-130°C in the first reactor to 150-170°C in the last. The polymer solution
is then extruded as fine strands into a devolatilizing vessel. In this vessel,
which is at a temperature of 225°C, removal of solvent and unreacted
monomer takes place, being aided by the large surface area of the strands.
The molten material is fed into an extruder, extruded as filament, cooled and
chopped. It may be noted that this type of process is commonly regarded as a
continuous bulk process since the amount of solvent used is so small.
(c) Suspension polymerization
Suspension processes simplify the heat transfer problems associated with
bulk methods and, unlike solution methods, they do not involve solvent
removal and recovery. The disadvantages of the suspension technique are
that it requires the added step of drying and it does not readily lend itself to
continuous operation. Typically, polymerization is carried out batch-wise in
a stirred reactor, jacketed for heating and cooling.
Reaction temperature is about 90°C. When polymerization is complete, the
product, in the form of a slurry, is washed with hydrochloric acid and water
to remove suspending agent, centrifuged, dried in warm air (at about 60°C),
extruded and chopped.
(d) Emulsion polymerization
Emulsion processes are not used for making solid grades of polystyrene. This
is because these processes lead to polymer containing large quantities of soap
residues which impair the electrical insulation properties and optical clarity.
Emulsion polymerization does, however, find limited application in the
production of polystyrene latex used in water-based surface coatings. The
techniques employed are very similar to those used for other polymer latices,
e.g. poly(vinyl acetate) latex. | [General Description]
Polystyrene (for GPC, 4,000) is a synthetic thermoplastic, that is attractive for a wide range of applications because of its properties such as low cost, rigidity, low specific weight, high chemical resistance, mechanical flexibility, biocompatibility and good processability. | [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.
| [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.] |
| Safety Data | Back Directory | [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 | [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. |
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