MATERIAL SAFETY DATA SHEET

Transportation Emergency                                                                                     Non-Transportation Emergency

Call Chemtrec: 1-800-424-9300                                                                           760-244-2774

1. PRODUCT DESCRIPTION:

Product ………….....: Prestec Clear Sanding Sealer/Filler

Product #……… ......: 28x50

Chemical Family…..: Polyester Resin

Chemical Name……: Unsaturated Polyester

2. HAZARDOUS INGREDIENTS:

Name/CAS#                                                   Exposure limits                                            Concentration

Styrene/ 100-42-5                                        osha: 50.00 PPM Twa                                            24%

                                                                         100.00 PPM Stel

                                                                         acgih: 50.00 PPM Twa

                                                                         100.00 PPM Stel

3. HAZARDOUS IDENTIFICATION:

Hazardous Overview

Warning! Color: Pinkish tint; Form: Viscous Liquid; Odor: Negligible; May cause respirator tract irritation; 

Inhalation may cause nausea or dizziness; May cause eye irritation; May be harmful if swallowed; Irritating 

gases/fumes may be given off during burning or thermal decomposition.

Potential Health Effects:

Route of entry…………………: Inhalation; skin contact; skin absorption; eye contact

4. Human Effects and Symptoms of Overexposure: 

Air monitoring conducted during the curing of this product has shown that acrolein and acetaldehyde vapors 

can be generated; if curing occurs in an unventilated area exposure limit for acrolein could be exceeded. The

following health effects include signs and symptoms associated with overexposure to acrolein and acetaldehyde.

Acute Inhalation………………..: Acrolein vapors cause severe respiratory and eye irritation. Symptoms of overexposure 

include lacrimation, a burning sensation in the throat, cough, chest discomfort and cyanosis (bluish 

discoloration of earlobes, lips and fingernails due to lack of oxygen in the blood). The tlv is designed to 

minimize irritation. Acetaldehyde vapors cause respiratory and eye irritation. The irritant effects include 

cough and burning sensation in the nose, throat and eyes. High concentrations can cause central system depression.

Chronic Inhalation…………….: None known.

Acute Skin Contact……………: Based on animal testing (see animal toxicity section), this product is not expected 

to be a skin irritant.

Chronic Skin Contact…………: None known.

Acute Eye Contact…………….: Based on animal testing, eye contact with liquid, aerosols and vapors of this product 

are not expected to cause eye irritation. However, eye contact with acrolein and acetaldehyde vapors (which can 

be generated during curing) at concentrations above their respective tlv’s can cause redness, tearing and 

swelling of the eyes.

Chronic Eye Contact………….: None known.

Acute Ingestion………………..: Can cause irritation in the mouth, stomach tissue and digestive tract.

Chronic Ingestion……………..: None known.

Carcinogenicity NTP………….: Not listed.

IRAC …………………………..: Not listed.

OSHA ………………………….: Not regulated.

5. MEDICAL CONDITIONS:

Aggravated by Exposure……..: Respiratory disorders may be aggravated by exposure to acrolein and acetaldehyde 

vapors.

Exposure Limits………………: Not established for product as a whole, refer to section 2 for exposure limits of 

hazardous constituents.

FIRST AID MEASURES:

First Aid For Eyes…………….: Flush with clean, lukewarm water (low pressure) for at least 15 minutes occasionally 

lifting eyelids. Obtain medical attention.

First Aid For Skin…………….: Remove contaminated clothing. Wash affected areas thoroughly with soap and water. 

Wash contaminated clothing before reuse.

First Aid For Inhalation……..: Move to an area free from risk of further exposure. Administer artificial respiration 

or oxygen if needed. Obtain medical attention immediately.

First Aid For Ingestion………: DO NOT INDUCE VOMITING. DO NOT GIVE ANYTHING BY MOUTH TO AN UNCONCIOUS PERSON. 

Consult physician.

6. FIRE FIGHTING MEASURES:

Flash Point……………………: 98 F (36.6 C) Pensky-Martens Closed cup (astm D-93)

Flammable Limits……………: (UEL)(%): 6.1 Styrene

(LEL) (%): 1.1 Styrene

Extinguishing Media ………..: Dry chemical; Carbon dioxide; Foam; Water.

Special Fire Fighting Procedures: Full emergency equipment with self-contained breathing apparatus should be 

worn by firefighters. During a fire thermal decomposition and combustion may generate irritating and toxic 

gases and aerosols.

Unusual Fire/Explosion Hazards: Closed container may explode when exposed to extreme heat. Use cold water 

spray to cool fire-exposed containers to minimize risk of rupture.

7. ACCIDENTAL RELEASE MEASURES:

Spill or Leak Procedures……: Evacuate non-essential personnel. Remove all sources of ignition and ventilate 

the area. Dike or impound spilled material and control further spillage if feasible. Notify appropriate 

authorities if necessary. Cover spill with sawdust, vermiculite, Fuller’s earth or other absorbent material. 

Collect material and place in a clean empty drum for disposal. Utilize recommended protective equipment. 

8.  HANDING & STORAGE:

Storage Temperature (min/max.): 41 F (5 C) / 68 F (20 C)

Shelf Life………………………..: 6 Months

Special Sensitivity………………: Heat, light, moisture.

Handling/Storage Precautions…: Stored in closed containers and in the dark at temperatures less than 68 F (20 C). 

If organic peroxide curing agents are used, mixing with pure accelerators can cause decomposition with 

explosive force. One material must be thoroughly dispersed in the resin before the second is added. 

9. PERSONAL PROTECTION:

Eye-protection Requirements……: Splash goggles, safety glasses or face shield. Contact lenses should not be 

worn.

Skin Protection Requirements…..: Permeation resistant gloves.

Ventilation/Respiratory Requirement: Exhaust ventilation sufficient to keep the airborne concentrations of 

acrolein and acetaldehyde below the appropriate TLV’s during curing of coating system must be utilized. 

Exhaust air may need to be cleaned by scrubbers & filters to reduce environmental contamination. Curing ovens 

must be ventilated to prevent off-gases from entering the workplace. 

10. PHYSICAL AND CHEMICAL PROPERTIES:

Physical Form…………………….: Liquid

Color………………………………: Colorless to Pink

Odor……………………………….: Of Solvent

Boiling Point …………………….: Styrene: 293 F (145 C) 

Heat Distortion Temperature …..: 280 F

Melting/Freezing Point ………….: Styrene: -23 F (-30.5 C)

Solubility in Water……………….: Insoluble

Specific Gravity ………………….: 1.12 at 68 F (20 C)

Bulk Density ………………….: Approx. 8.75 LB/gal Clear

% Volatile By Weight …………..: 25 %

Vapor Pressure …………………..: Less than 7.5 mm Hg @ 68 F (20 C)

Vapor Density…………………….: 3.59 (Styrene) (Air = 1)

VOC ………………………………: 307 Grams Per Gallon or 90 Grams Per Liter

11. STABILITY AND REACTIVITY:

Stability…………………………..: Stable when stored in dark at temperatures below 68 F (20 C).

Hazardous Polymerization………: May occur; If product is not stored in dark at temperatures below 68 F (20 C), 

polymerization may occur.

Incompatibilities…………………: Aliphatic hydrocarbons.

Instability Conditions……………: None known.

Decomposition Products ……..…: By fire: CO2, CO. During curing process: Acrolein, Acetaldehyde.

12. TOXICOLOGICAL INFORMATION:

Acute Toxicity

Oral LD50………………: Greater than 5000 mg/kg (rat)

Eye Effects ……………....: Non-irritant (rabbit)

Skin Effects …………….: Slightly Irritating, 24h (rabbit)

ECOLOGICAL INFORMATION:

13. No Ecological Information Available:

14. DISPOSAL CONSIDERATIONS:

Waste Disposal Method…………: Waste must be disposed of in accordance with Federal, State and local environmental 

control regulations. Incineration is the preferred method. Empty containers must be handled with care due to 

product residue. Decontaminate containers prior to disposal. 

15. TRANSPORTATION INFORMATION:

Technical Shipping Name…………….: Resin Solution

Freight Class………………………….: 55

Hazard Class Division ………………..: 3

UN # …………………………………...: UN1866

Subsidiary Risk………………….........: None

Packing Group …………………..........: III

Hazard Label ……………………….....: Flammable Liquid

Radioactive ………………………........: Non-radioactive

16.  REGULATORY INFORMATION:

The following chemicals are specifically listed by individual states; other product specific health and safety 

data in other sections of the MSDS may also be applicable for state requirements. For details on your 

regulatory requirements you should contact the appropriate agency in your state.

Name/cas #                                              Concentration                          State Code

Styrene / 100-42-5                                           24%                               PA1,MA,NJ1

Acetaldehyde / 75-07-0                                    *%                                CA

Unsaturated Polyester Resin                       65-75%                           PA3

Ester                                                                   1- 10%                           PA3

CA = California proposition 65

MA = Massachusetts Hazardous substance lists.

NJ1 = New Jersey Hazardous substance list.

PA1 = Pennsylvania Hazardous substance list.

PA3 = Pennsylvania Non-hazardous present at 3% or greater.

17. OTHER INFORMATION:

None

This information is furnished without warranty, expressed or implied, except that it is accurate to the best 

knowledge of Simtec. The data on this sheet relates only to the material specified herein. Simtec assumes no 

legal responsibility for use or reliance upon these data.

Effective Date: 12-10-99                                                                                     Approved By     Simen DeVries