LOCTITE CORPORATION 07/02/97
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 01 of 05

Ultra Black(R) RTV Silicone
59830

1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Ultra Black(R) RTV Silicone
Item No.: 59830
Product Type: RTV Silicone

2. COMPOSITION, INFORMATION ON INGREDIENTS


Ingredients CAS No. %

Poly(dimethylsiloxane),
hydroxy terminated 70131-67-8 35-40
Calcium carbonate 471-34-1 30-35
Poly(dimethylsiloxane),
dimethyl 63148-62-9 15-20
Modified silicon dioxide 68611-44-9 5-10
Vinyl oximinosilane 2224-33-1 3-5
ALUMINUM 7429-90-5 0.1-1
CARBON BLACK 1333-86-4 0.1-1
Methyl ethyl ketoxime Proprietary ***


***When this product is exposed to moisture,
5-10% methyl ethyl ketoxime may be formed.


Ingredients which have exposure limits

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

Calcium carbonate 10 mg/m3 dust 15 mg/m3 dust None
5 mg/m3 respir.
Modified silicon dioxide 10 mg/m3 6 mg/m3 6 mg/m3
ALUMINUM 10 mg/m3 dust 15 mg/m3 dust None
5 mg/m3 respir.
CARBON BLACK 3.5 mg/m3 TWA 3.5 mg/m3 TWA 5ppm
Methyl ethyl ketoxime None None 3 ppm TWA
10 ppm STEL

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


3. HAZARDS IDENTIFICATION

Toxicity: Eye and skin irritant. Moderately toxic by
ingestion. When heated to temperatures above 300F
(150C) in the presence of air, this product can







LOCTITE CORPORATION 07/02/97
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 02 of 05

Product Name: Ultra Black(R) RTV Silicone
Item No.: 59830

3. HAZARDS IDENTIFICATION (continued)

form formaldehyde vapors. Formaldehyde is a
potential cancer hazard and a known skin and resp-
iratory sensitizer. Vapors irritate eyes, nose and
throat. Safe handling conditions may be maintained
by keeping vapor concentrations below the OSHA
permissible limit for formaldehyde.
Primary Routes of Entry: Skin, ingestion, inhalation.
Signs and symptoms
of Exposure: Methyl ethyl ketoxime produced during cure
is toxic and irritates eyes, nose and throat.
Existing Conditions
Aggravated by Exposure: None known

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

Poly(dimethylsiloxane),
hydroxy terminated No Data NO NO NO
Calcium carbonate NUI NO NO NO
Poly(dimethylsiloxane),
dimethyl IRR NO NO NO
Modified silicon dioxide No Data NO NO NO
Vinyl oximinosilane No Data NO NO NO
ALUMINUM IRR LUN NO NO NO
CARBON BLACK AC4 RES NO 2B NO
Methyl ethyl ketoxime ALG BLO CNS IRR NO NO NO
-------------------------------------------------------------------------------

Abbreviations

2B Possibly carcinogenic to humans AC4 ACGIH-Unclassifiable as human carc.
ALG Allergen BLO Blood
CNS Central nervous system IRR Irritant
LUN Lung NUI Nuisance dust
RES Respiratory


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: Wipe off paste with paper towel or cloth.
Wash thoroughly with soap and water
Eye Contact: Flush at least 15 minutes with water. Obtain
medical attention.








LOCTITE CORPORATION 07/02/97
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 03 of 05

Product Name: Ultra Black(R) RTV Silicone
Item No.: 59830

5. FIRE FIGHTING MEASURES

Flash Point: More than 200F Method: Tag Closed Cup
Recommended
Extinguishing Agents: Carbon dioxide, foam, dry chemical
Hazardous Products formed
by Fire or Thermal Decomp Formaldehyde, silica fume
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: Wipe or scrape up spilled material. Maintain good
ventilation for large spills. Place scrap
material in a well ventilated area and allow to
cure to rubber.

7. HANDLING AND STORAGE

Safe Storage: Store in a dry area below 90F. Keep
containers closed when not in use.
(Contact Loctite Customer Service 1-800-243-4874 for shelf Life information)
Handling: Avoid skin and eye contact. Avoid breathing vapor.

8. EXPOSURE CONTROLS, PERSONAL PROTECTION

Eyes: Safety glasses or goggles. Avoid contact lenses.
Skin: Rubber or plastic gloves.
Ventilation: Provide local ventilation for prolonged use in a
confined area.

See Section 2 for Exposure Limits.

9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Black paste
Odor: Mild
Boiling Point: Not Applicable, Polymeric
pH: 7-8
Solubility in Water: Polymerized
Specific Gravity 1.3
Volatile Organic Compound
(EPA Method 24) 4.3%; 56 grams per liter
Vapor Pressure: Less than 5mm at 70F
Vapor Density: 3.0







LOCTITE CORPORATION 07/02/97
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 04 of 05

Product Name: Ultra Black(R) RTV Silicone
Item No.: 59830

9. PHYSICAL AND CHEMICAL PROPERTIES (continued)

Evaporation Rate
(Ether = 1) Not available

10. STABILITY AND REACTIVITY

Stability: Stable
Hazardous Polymerization: Will not occur
Incompatibility: Strong oxidizers. Polymerized by contact with
moisture.
Conditions to Avoid: Not available
Hazardous Decomposition
Products (non-thermal): Methyl ethyl ketoxime

11. TOXICOLOGICAL INFORMATION

See Section 3.

12. ECOLOGICAL INFORMATION

No data available

13. DISPOSAL CONSIDERATIONS

Recommended methods of
disposal: Cured rubber can be incinerated or landfilled
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: No Proposition 65 chemicals are known to be
present.








LOCTITE CORPORATION 07/02/97
ROCKY HILL, CONNECTICUT 06067
EMERGENCY PHONE: (860) 571-5100

MATERIAL SAFETY DATA SHEET Page 05 of 05

Product Name: Ultra Black(R) RTV Silicone
Item No.: 59830

16. OTHER INFORMATION

Estimated NFPA(R) Code:
Health Hazard: 1
Fire Hazard: 1
Reactivity Hazard: 1
Specific Hazard: No water

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, Environmental Health & Safety
Company: Loctite Corp., 1001 Tr Br Cr, Rocky Hill CT 06067
(24hr.) Phone: (860) 571-5100
Revision Date: April 15, 1997 Revision: 0024