Product Name: Loctite(R) 277 Threadlocker High Strength

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

MATERIAL SAFETY DATA SHEET Page 01 of 04

Loctite(R) 277 Threadlocker High Strength
27731

1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Loctite(R) 277 Threadlocker High Strength
Item No.: 27731
Product Type: Anaerobic

2. COMPOSITION, INFORMATION ON INGREDIENTS

Ingredients CAS No. %

Polyglycol dimethacrylate 25852-47-5 50-55
Bisphenol A fumarate resin 39382-25-7 40-45
CUMENE HYDROPEROXIDE* 80-15-9 1-3
Saccharin 81-07-2 1-3
N,N-Dialkyltoluidines 613-48-9 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)

CUMENE HYDROPEROXIDE None None 1ppm(6mg/m3)
Skin(WEEL)

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

3. HAZARDS IDENTIFICATION

Toxicity: Possible eye irritant.
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: May cause dermatitis on prolonged contact in
sensitive individuals.
Existing Conditions
Aggravated by Exposure: None known

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

Polyglycol dimethacrylate ALG IRR NO NO NO
Bisphenol A fumarate resin ALG IRR NO NO NO
CUMENE HYDROPEROXIDE ALG CNS COR IRR MUT NO NO NO

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

MATERIAL SAFETY DATA SHEET Page 02 of 04

Product Name: Loctite(R) 277 Threadlocker High Strength
Item No.: 27731

3. HAZARDS IDENTIFICATION (continued)

Saccharin NTO NO N/A NO
N,N-Dialkyltoluidines NTO NO NO NO
-------------------------------------------------------------------------------

Abbreviations

N/A Not Applicable ALG Allergen
CNS Central nervous system COR Corrosive
IRR Irritant MUT Mutagen
NTO No Target Organs

4. FIRST AID MEASURES

Ingestion: Do not induce vomiting. Keep individual calm.
Obtain medical attention.
Inhalation: Does not apply
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

Explosive Limits:
(% by volume in air)Lower Not available
(% by volume in air)Upper Not available

6. ACCIDENTAL RELEASE MEASURES

Steps to be taken in case
of spill or leak: Soak up with an inert absorbent. Store in 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.

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

MATERIAL SAFETY DATA SHEET Page 03 of 04

Product Name: Loctite(R) 277 Threadlocker High Strength
Item No.: 27731

8. EXPOSURE CONTROLS, PERSONAL PROTECTION

Eyes: Safety glasses or goggles.
Skin: Neoprene, rubber, or butyl rubber gloves.
Ventilation: Does not apply
Respiratory Not available

See Section 2 for Exposure Limits.

9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Red liquid
Odor: Mild
Boiling Point: More than 300°F
pH: Does not apply
Solubility in Water: Slight
Specific Gravity 1.10 at 80°F
Volatile Organic Compound
(EPA Method 24) 10.0%; 110 g/l
Vapor Pressure: Less than 5mm at 80°F
Vapor Density: Not available
Evaporation Rate
(Ether = 1) Not available

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

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

MATERIAL SAFETY DATA SHEET Page 04 of 04

Product Name: Loctite(R) 277 Threadlocker High Strength
Item No.: 27731

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: This product contains Saccharin. No prop65 hazard
warning is necessary if this product is used as
reasonably anticipated.

16. OTHER INFORMATION

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

Estimated HMIS(R) Code:
Health Hazard: 1
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; Safety,Health&Regulatory Affairs
Company: Loctite Corp., 1001 Tr Br Cr, Rocky Hill CT 06067
(24hr.) Phone: (860) 571-5100
Revision Date: January 27, 1999 Revision: 0027
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