Eager Polymers, Inc.

3350 W. 48th Place

Chicago, IL 60632-3000

(773) 927-3484

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Eager Polymers 24-Hour Emergency Telephone (800) 424-9300

Revision Date: 08/27/2014

ATTN: PLANT MGR/SAFETY DIR Issue Date: 08/27/2014

MSDS File ID: Castolite AC

Customer No:

Warehouse No: 0022

This MSDS complies with 29 CFR 1910.1200 (Hazard Communication).




Name: Castolite AC

General or Generic ID: Unsaturated Polyester Resin

Hazard Classification: Flammable Liquid

Shipping Name: Resin Solution (Styrene Monomer), 3, UN1866,

PG III, Marine Pollutant





Unsaturated Polyester Base Resin See Index 62-64 None-Estb. None-Est

Styrene 100-42-5 36-38 50 ppm TWA 50 ppm (1)

(1) OSHA has formally endorsed a styrene industry proposal for a voluntary

50 ppm PEL for workplace exposure to styrene. This proposal was agreed

upon by representatives of the UPR industry. The OSHA STEL is 100 ppm.

The ACGIH recently changed the TLV for styrene from 50 ppm to 20 ppm,

and the STEL from 100 ppm to 40 ppm.





Initial Boiling Point For Styrene 293.40 Deg F (145.22 Deg C)

@ 760.00 mm Hg


Pressure For Styrene 4.3 mm Hg

38 Deg F (20 Deg C)


Gravity 1.0 -1.2

@ 77 Deg F (25 Deg C)


Density Air = 1 3.6


Rate Slower than Ether

PRODUCT: Castolite AC




Point: 88 Deg F (31.1 Deg C) for Volatile Component

Flammable: (Lowest Value of Styrene) Lower - 1.1%

(Upper Value of Styrene) Upper - 6.1%

Extinguishing Media: Foam, carbon dioxide, dry chemical, or water fog.

Hazardous Decomposition Products: May form toxic materials such as carbon

dioxide, carbon monoxide, and various


Special Firefighting Procedures: Wear self-contained breathing apparatus

with a full facepiece operated in pressure

demand or other positive pressure mode when

fighting fires.

Vapors are heavier than air and may travel along the ground or may be moved

by ventilation and ignited by ignition sources at locations distant from

material handling point.

Never use welding or cutting torch on or near drum (even empty) because

product vapor can ignite explosively.




Exposure Level: Not established for product. See Section II.


Eyes - Can cause severe irritation, redness, tearing, blurred vision.

Skin - Prolonged or repeated contact can cause moderate irritation,

defatting, dermatitis.

Inhalation - Excessive inhalation of vapors can cause nasal irritation,

dizziness, weakness, fatigue, nausea, headache, possible

unconsciousness, and even asphyxiation.

Swallowing - Can cause gastrointestinal irritation, nausea, vomiting,

diarrhea. Aspiration of material into the lungs can cause

chemical pneumonitis.

PRODUCT: Castolite AC


V - HEALTH DATA (continued)



Overexposure to this material (or its components) has been suggested as a

cause of the following effects in laboratory animals, and may aggravate

pre-existing disorders of these organs in humans: mild, reversible kidney

effects, effects on hearing, respiratory tract (nose, throat, and airways),

testis, liver. Overexposure to this material (or its components) has been

suggested as a cause of the following effects in humans, and may aggravate

pre-existing disorders of these organs: central nervous system effects,

mild effects on color vision, effects on hearing, and respiratory tract

damage (nose, throat, and airways).


If on Skin: Thoroughly wash exposed area with soap and water. Remove

contaminated clothing. Launder contaminated clothing before


If in Eyes: Flush with large amount of water, lifting upper and lower lids

occasionally. Get medical attention.

If Swallowed: Do not induce vomiting. Keep person warm, quiet, and get

medical attention. Aspiration of material into the lungs due

to vomiting can cause chemical pneumonitis which can be fatal.

If Inhaled: If affected, remove individual to fresh air. If breathing is

difficult, administer oxygen. If breathing has stopped, give

artificial respiration. Keep person warm, quiet, and get

medical attention.


Inhalation, skin absorption, skin contact, eye contact.

PRODUCT: Castolite AC




Polymerization: Possible

Stability: Stable

Incompatibility: Avoid contact with strong alkalies, strong

mineral acids, and oxidizing agents.

Conditions to Avoid: Exposure to excessive heat or open flame,

storage in open containers, prolonged

storage (6 months), storage above 100 Deg F

(38 Deg C), and contamination with

oxidizing agents.

Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, low

molecular weight hydrocarbons, and organic





all ignition sources (flares, flames (including pilot lights),

and electrical sparks). Persons not wearing protective equipment should

be excluded from area of spill until clean-up has been completed. Stop

spill at source, dike area of spill to prevent spreading, shovel or pump to

tank or drums. Remaining liquid may be absorbed in sand, clay, earth, or

other absorbent material and shoveled into containers.




Protection: If PEL of the product or any component is

exceeded, an NIOSH/MSHA approved respirator

is advised in absence of proper engineering

control (see your safety equipment supplier).

Engineering or administrative controls should

be implemented to reduce exposure.

Ventilation: Provide sufficient mechanical (general and/or

local exhaust) ventilation to maintain exposure

below TLV(s).

Protective Gloves: Wear chemical resistant gloves that afford

proper protection to the hands, such barrier

creams maybe used in some environments as long as

proper skin protection is afforded.

Eye Protection: Chemical splash goggles in compliance with OSHA

regulations are advised; however, OSHA

regulations also permit other type safety

glasses. (Consult your safety equipment


Other Protective Equipment: Work clothing that covers arms and legs.

PRODUCT: Castolite AC




of this material may be hazardous when empty. Since empty

containers retain product residues (vapors, liquid, and/or solids), all

hazard precautions given in this MSDS must be observed.

The information accumulated herein is believed to be accurate, but is not

warranted to be, whether originating with Interplastic or not. Recipients

are advised to confirm in advance of need that the information is current,

applicable, and suitable to their circumstances.




has been identified as a possible human carcinogen by the Inter-national

Agency for Research on Cancer (IARC). The IARC determination is

based on "limited evidence" in animals and other "relevant data." IARC

concedes there is "inadequate evidence" on humans for its findings.

The Styrene Information and Research Center (SIRC) recently sponsored studies

to evaluate potential health effects in laboratory rats and mice exposed by

inhalation to styrene for six hours per day for five days per week of their

lifetime. The rat study, completed in 1996, showed no increased incidence of

tumors related to styrene exposure at levels up to 1000 parts per million

(ppm). The results of the mouse study are in the process of being analyzed,

and so far only the lungs have been evaluated. The number of lung tumors

observed at exposure levels of 20 to 160 ppm was increased as compared to

the number of tumors seen in unexposed mice. These lung tumor results from

the mouse study have been added to the MSDS for styrene.

The lung effects in the new mouse study are in contrast to findings in other

studies in both rodents and humans, including the recent SIRC-sponsored study

in rats. No link between styrene exposure and an increased incidence of

cancer has been found collectively in eight studies of workers in the

reinforced plastics and composites industries prior to 1992, or in two

subsequent studies of composites/reinforced plastics workers. All together,

over 90,000 people have been studied. Exposure levels in these industries are

above the levels routinely measured in styrene and polystyrene production.

Also in the recent animal studies, irritation and degenerative effects on the

olfactory cells in the nose (responsible for the sense of smell) were observed

in mice exposed repeatedly by inhalation to 20 ppm and above, and in rats

exposed to 50 ppm and above. Atrophy (degeneration) of the olfactory nerve

was observed at levels at or above 40 ppm in mice and at or above 500 ppm in

rats. SIRC is conducting follow-up research to further understand these

findings and their possible importance to humans. Liver damage has been

reported in mice at exposure levels of 100 ppm or above; comparable liver

damage has not been reported in rats or humans exposed to styrene. It appears

that mice are more sensitive to styrene than are other species. Information

about potential damage to olfactory cells, irritation in the respiratory

tract, and potential liver damage has been added to the MSDS for styrene.

We recommend that the precautions in this MSDS be followed.

PRODUCT: Castolite AC




product contains toxic chemicals subject to the reporting requirements of

Section 313 of the Emergency Planning and Community Right-To-Know Act of 1986

and of 40 CFR 372. Please refer to "Section II - Hazardous Components" for the

specific product and concentration.




base resins indicated under Section II are identified by one or more of the

following CAS numbers:

113060-15-4 28679-80-3 61224-63-3

135108-89-3 29011-83-4 62569-28-2

141224-31-9 29350-58-1 64386-66-9

149717-53-3 29403-69-8 64386-67-0

155122-62-6 30110-00-0 67380-21-6

25037-66-5 30946-90-8 67599-39-7

25101-03-5 31260-98-7 67712-08-7

25215-72-9 31472-46-5 67845-68-5

25464-21-5 32505-78-5 67939-08-6

25749-46-6 32677-47-7 67939-40-6

25749-49-9 32762-75-7 68002-44-8

25987-82-0 36346-15-3 68140-84-1

26098-37-3 36425-15-7 68140-88-5

26123-45-5 36425-16-8 68171-28-8

26265-08-7 37339-47-2 68238-98-2

26301-26-8 37347-86-7 68299-40-1

26588-55-6 37999-57-8 68492-68-2

26795-76-6 42133-45-9 68511-26-2

27342-37-6 52453-94-8 68585-94-4

27837-75-8 54228-09-0 68647-07-4

27863-48-6 56083-98-8 72259-64-4

28472-89-1 56083-99-9 81192-92-9

28516-30-5 57863-48-6 9065-68-3

28572-30-7 58182-50-6