Product Name: Loctite(R) 635 Retaining Compound Slip Fit

HENKEL LOCTITE CORPORATION 08/18/02
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 01 of 05

Loctite(R) 635 Retaining Compound Slip Fit
63531

1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Loctite(R) 635 Retaining Compound Slip Fit
High Strength Slow Setting
Item No.: 63531
Product Type: Anaerobic

2. COMPOSITION, INFORMATION ON INGREDIENTS

Ingredients CAS No. %

Polyurethane methacrylate
resin Proprietary 50-55
Hydroxyalkyl methacrylate 27813-02-1 35-40
ACRYLIC ACID* 79-10-7 5-7
CUMENE HYDROPEROXIDE* 80-15-9 1-3
TRIBUTYLAMINE 102-82-9 0.1-1
Substituted silane 2530-85-0 0.1-1

* This component is listed as a SARA Section 313 Toxic Chemical.

Ingredients which have exposure limits

Exposure Limits (TWA) ACGIH OSHA OTHER
Ingredients (TLV) (PEL)

Hydroxyalkyl methacrylate None None 1 ppm TWA
3 ppm STEL
ACRYLIC ACID 2 ppm TWA skin 10 ppm TWA skin 1 ppm TWA skin
5.9 mg/m3 skin 30 mg/m3 skin 3 ppm STEL skin
CUMENE HYDROPEROXIDE None None 1ppm(6mg/m3)
Skin(WEEL)

Exposure Limits (STEL) ACGIH OSHA
Ingredients (TLV) (PEL)

3. HAZARDS IDENTIFICATION

Toxicity: Liquid is an eye and skin irritant.
Vapors may irritate eye, nose and throat.
Estimated oral LD50 more than 5000 mg/kg.
Estimated dermal LD50 more than 2000 mg/kg.
Primary Routes of Entry: None known
Signs and Symptoms
of Exposure: Irritation of eyes, skin , nose or throat. May
cause dermatitis on,prolonged contact in sensitive
individuals.

HENKEL LOCTITE CORPORATION 08/18/02
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 02 of 05

Product Name: Loctite(R) 635 Retaining Compound Slip Fit
High Strength Slow Setting
Item No.: 63531

3. HAZARDS IDENTIFICATION (continued)

Existing Conditions
Aggravated by Exposure: Acrylic acid: Upper respiratory and lung diseases,
dermatitis

Literature Referenced Carcinogen
Ingredients Target Organ and Other Health Effects NTP IARC OSHA

Polyurethane methacrylate
resin No Data NO NO NO
Hydroxyalkyl methacrylate ALG IRR NO NO NO
ACRYLIC ACID ALG COR IRR KID LIV NO N/A NO
CUMENE HYDROPEROXIDE ALG CNS COR IRR MUT NO NO NO
TRIBUTYLAMINE ALG CNS COR IRR NO NO NO
Substituted silane ALG IRR NO NO NO
-------------------------------------------------------------------------------

Abbreviations

N/A Not Applicable ALG Allergen
CNS Central nervous system COR Corrosive
IRR Irritant KID Kidney
LIV Liver MUT Mutagen

4. FIRST AID MEASURES

Ingestion: Do not induce vomiting. Keep individual calm.
Obtain medical attention
Inhalation: Remove to fresh air. If symptoms persist,
obtain medical attention.
Skin Contact: Wash with soap and water.
Eye Contact: Flush at least 15 minutes with water. Obtain
medical attention.

5. FIRE FIGHTING MEASURES

Flash Point: More than 200°F Method: Tag Closed Cup
Recommended
Extinguishing Agents: Carbon dioxide, foam, dry chemical
Special Firefighting
Procedures: Not available
Hazardous Products formed
by Fire or Thermal Decomp Irritating organic vapors
Unusual Fire or
Explosion Hazards: None

HENKEL LOCTITE CORPORATION 08/18/02
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 03 of 05

Product Name: Loctite(R) 635 Retaining Compound Slip Fit
High Strength Slow Setting
Item No.: 63531

5. FIRE FIGHTING MEASURES (continued)

Explosive Limits:
(% by volume in air)Lower 2.0% Acrylic acid
0.8% Tributylamine
(% by volume in air)Upper 8.0% Acrylic acid
6.4% Tributylamine

6. ACCIDENTAL RELEASE MEASURES

Steps to be taken in case
of spill or leak: Soak up in an inert absorbent. Store in a partly
filled, closed container until disposal.

7. HANDLING AND STORAGE

Safe Storage: Store below 100°F
(Contact Loctite Customer Service 1-800-243-4874 for shelf life information)
Handling: Avoid prolonged skin contact. Keep away from eyes
Avoid prolonged breathing of vapors.

8. EXPOSURE CONTROLS, PERSONAL PROTECTION

Eyes: Safety glasses or goggles.
Skin: Rubber or plastic gloves.
Ventilation: Sufficient to maintain vapor concentration below
TLV.
Respiratory Not available

See Section 2 for Exposure Limits.

9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Green liquid
Odor: Sharp, irritating
Boiling Point: More than 300°F
pH: Does not apply
Solubility in Water: Slight
Specific Gravity 1.09 at 80°F
Volatile Organic Compound
(EPA Method 24) 46.2%; 503.58 g/l
Vapor Pressure: Less than 10mm at 80°F
Vapor Density: Not available
Evaporation Rate
(Ether = 1) Not available

HENKEL LOCTITE CORPORATION 08/18/02
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 04 of 05

Product Name: Loctite(R) 635 Retaining Compound Slip Fit
High Strength Slow Setting
Item No.: 63531

10. STABILITY AND REACTIVITY

Stability: Stable
Hazardous Polymerization: Will not occur
Incompatibility: None
Conditions to Avoid: Not available
Hazardous Decomposition
Products (non-thermal): None

11. TOXICOLOGICAL INFORMATION

See Section 3.

12. ECOLOGICAL INFORMATION

No data available

13. DISPOSAL CONSIDERATIONS

Recommended methods of
disposal: Incinerate following EPA and local regulations.
EPA Hazardous Waste
Number NH - Not a RCRA Hazardous Waste Material

14. TRANSPORTATION INFORMATION

DOT (49 CFR 172)
Domestic Ground Transport
Proper Shipping Name: Unrestricted
Hazard Class or
Division: Unrestricted
Identification Number: None
Marine Pollutant: None
IATA
Proper Shipping Name: Unrestricted
Class or Division: Unrestricted
UN or ID Number: None

15. REGULATORY INFORMATION

CA Proposition 65: WARNING: This product contains chemicals known to
the State of California to cause cancer
and birth defects or other reproductive
harm.
(ppb levels of Arsenic, Cd, Pb, Ni),
Toluene Diisocyanate, Toluene, Ethylene
Oxide

HENKEL LOCTITE CORPORATION 08/18/02
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 05 of 05

Product Name: Loctite(R) 635 Retaining Compound Slip Fit
High Strength Slow Setting
Item No.: 63531

16. OTHER INFORMATION

Estimated NFPA(R) Code:
Health Hazard: 2
Fire Hazard: 1
Reactivity Hazard: 1
Specific Hazard: Does not apply

Estimated HMIS(R) Code:
Health Hazard: 2
Flammability Hazard: 1
Reactivity Hazards: 1
Personal Protection: See Section 8.

NFPA is a registered trademark of the National Fire Protection Assn.
HMIS is a registered trademark of the National Paint and Coatings Assn.

Prepared By: Stephen Repetto
Title: Research Chemist, Environmental Health & Safety
Company: Loctite Corp., 1001 Tr Br Cr, Rocky Hill CT 06067
(24hr.) Phone: (860) 571-5100
Revision Date: January 27, 1999 Revision: 0029
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