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®
MSDS No.:
349
Revision No.:
000
Revision Date: 08/14/13
Page:
1 of 2
HILTI ® is a registered trademark of Hilti Corp.
MATERIAL SAFETY DATA SHEET
Product name:
CFS-S SIL SL Firestop Silicone Sealant
Description:
Self-leveling, flexible silicone sealant for firestopping through penetrations and construction joints
where movement is expected.
Supplier:
Hilti, Inc.  P.O. Box 21148, Tulsa, OK 74121
Emergency # (Chem-Trec.):
1 800 424 9300 (USA, PR, Virgin Islands, Canada);  703 527 3887 (Other countries)
INGREDIENTS AND EXPOSURE LIMITS
Ingredients:
CAS Number:
qisW
PEL:
STEL:
Amorphous silica
7631-86-9
3 mg/m3(R)
NE
NE
Calcium carbonate
000471-34-1
NE
5mg/m3(R)
NE
Quartz silica
14808-60-7
0.025mg/m3(R) 10 mg/ m3(R)
% SiO2 + 2
Titanium dioxide
13463-67-7
10 mg/m3
3 mg/m3
NE
Abbreviations:  PEL = OSHA Permissible Exposure Limit.  TLV = ACGIH Threshold Limit Value.  STEL = Short Term Exposure
Limit.  NE = None Established.  NA = Not Applicable.  R = Respirable Particle
PHYSICAL DATA
Appearance:
Red or white paste.
Odor:
Negligible.
Vapor Density:  (air = 1)
Not applicable.
Vapor Pressure @ 68F:
Not determined
Boiling Point:
Not applicable.
VOC Content:
50 g/l
Evaporation Rate:
Not applicable.
Solubility in Water:
Insoluable
Specific Gravity:
1.38
pH:
Not determined.
FIRE AND EXPLOSION HAZARD DATA
Flash Point:
412 F
Flammable Limits:
Not applicable.
Extinguishing Media:
Water, CO2, Dry Chemical, Foam.
Special Fire Fighting
Procedures:
A NIOSH-approved self-contained breathing apparatus (SCBA) should be worn when fighting
fires involving chemicals.
Unusual Fire and Explosion
Hazards:
None known.  Product serves as a fire stopping material.
REACTIVITY DATA
Stability:
Stable.
Hazardous Polymerization:
Will not occur.
Incompatibility:
Strong oxidizing agents, acids, alkaline hydroxides, and water.
Decomposition Products:
Thermal decomposition can yield CO and CO2.
Conditions to Avoid:
None known.
HEALTH HAZARD DATA
Known Hazards:
Acute: Irritation is possible.  Chronic: None known or anticipated.
Signs and Symptoms of
Exposure:
Eyes – Strong irritant with danger of eye injury.  Skin – No irritant effects.  Inhalation - No effects
expected.  Ingestion - Not a likely route of exposure.
Routes of Exposure:
Dermal, eyes..
Carcinogenicity:
Product contains quartz silica which is classified as a carcinogen by IARC, NTP, and OSHA.
However, since the product is a wet paste, exposure is unlikely.
Medical Conditions
Aggravated by Exposure:
Eye, skin, and respiratory conditions.