Thermo Scientific BF51841C Operation Manual page 15

Toxic Substances Con-
trol Act (TSCA):
Toxic Substances Con-
trol Act (TSCA):
SARA Title III:
XI. SPECIAL PRECAUTIONS / SUPPLEMENTAL INFORMATION
Product which has been in service at elevated temperatures (greater than 1800°F)
may undergo partial conversion to cristobalite, a form of crystalline silica. Chronic
exposure to respirable crystalline silica may lead to delayed lung injury (silicosis).
The amount of cristobalite present will depend on the temperature and length in
service.
IARC has concluded that crystalline silica from occupational sources inhaled in the
form of quartz or cristobalite is carcinogenic to humans (Group 1) [IARC
Monograph Vol. 68, June 1997]. The OSHA permissible exposure limit (PEL) and
the 1988-89 ACGIH threshold limit value (TLV) for cristobalite is 0.05 mg/if
(respirable dust). Particular care should be taken when working with "used"
material to minimize generation of dust. When removing and handling product
used in high temperature applications, special caution should be taken.to avoid
unnecessary cutting and tearing of the used material to minimize generation of
airborne dust. Workers should. Use respiratory protection. Use NIOSH or MSHA
approved equipment when airborne exposure limits may be exceeded, especially
in confined areas with inadequate ventilation.
Insulation surfaces should be lightly sprayed with H
airborne dust. As water evaporates during removal, additional water should be
sprayed on surfaces as needed. Only enough water should be sprayed to
suppress dust so that water does not run on to the fiber in the work area.
After RCF removal is completed, dust-suppressing cleaning methods, such as wet
sweeping or wet vacuuming, should be used to clean the work area. If dry
vaccuming is used, the vacuum must be equipped with a HEPA filter. Air blowing
or dry sweeping should never be used. Dust-suppressing components can be
used to clean up light dust.
XII. INGREDIENTS / HEALTH HAZARD INFORMATION
COMPONENT LIMITS
Refractory Ceramic Fiber
Amorphous Silica
Thermo Scientific
All substances in this product are listed, as required, on the TSCA
inventory. These products contain RCF which may be subject to Sec-
tion 12 (b) Export Notification Requirements.
All substances in this product are listed, as required, on the TSCA ·
inventory. These products contain RCF which may be subject to Sec-
tion 12 (b) Export Notification Requirements.
This product does not contain any substances reportable under Sec-
tions 302, 304, 313. Sections 311/312 apply.
CAS NO. %
142844-00-6 40-95
7631-86-9 0-60
Material Safety Data Sheet
O before removal to suppress
2
EXPOSURE LIMITS
.5 Fiber/cc Guideline-RRC*
3-Nuisance
5 mg/M Respir – OSHA
3- Nuisance Total – ACGIH*
10 mg/M
6 mg/M' (total) PEL
Safety Notes
1-9