Specification

! ! Page!4!of!10#
Date#of#Issue:##06/01/15!
!
Section!7.!!Handling!and!Storage!
Precautions!of!safe!handling!and!
storage:!
Fiber-cement!boards!in!their!intact!state!do!not!present!a!health!
hazard.!!The!controls!below!apply!to!dust!generated!from!the!
boards!by!cutting,!rebating,!drilling,!routing,!sawing,!crushing!or!
otherwise!abrading!fiber!cement,!and!when!cleaning!up,!
disposing!of!or!moving!the!dust.!
!
James!Ha rdie ®!reco m mended!b est!p ractic es!fo r!han d ling!fibe r -
cement:!!!
Keep exposure to dust as low as reasonably possible. Respirable
crystalline silica limits are specified by OSHA and MSHA and
identified in Section 8 of this MSDS. Exposure to respirable (fine) silica
dust depends on a variety of factors, including activity rate (e.g. cutting
rate), method of handling (e.g. electric shears), environmental
conditions (e.g. weather conditions, workstation orientation) and control
measures used.
Wherever possible, practices likely to generate dust should be carried
out in well ventilated areas (e.g. outside). The work practices and
engineering controls set out in Section 8 should be followed to reduce
silica exposures.
Keep away from reactive products. Do not store near food, beverages or
smoking materials. Avoid spilling and creating dust. Maintain
appropriate dust controls during handling. Use appropriate respiratory
protection during handling as described in Section 8.
Incom p a tib ilitie s :!
Hydrofluoric!acid!will!dissolve!silica!and!can!generate!silicon!
tetrafluoride,!a!corrosiv e!gas .!!Con tact!w ith!stro ng !oxid izing!
agents!such!as!fluorine,!boron!trifluoride,!chlorine!trifluoride,!
manganese!trifluoride!or!oxygen!difluoride!may!cause!fires!and!
/or!explosions.!!Furthermore,!limestone!is!incompatible!with!
acids!and!ammonium!salts.!
Section!8.!!Exposure!Controls!/!Personal!Protection!
OSHA Permissible Exposure Standards (PEL): Exposures shall not exceed an 8-hour time weighted average
(TWA) limit as stated in 29 CFR 1910.1000 Table Z-3 for mineral dusts, expressed in million particles per cubic
feet (Mppcf) and/or milligrams per cubic meter (mg/m3). The American Conference of Governmental Industrial
Hygienists Threshold Limit Values (TLV are that organization’s recommended exposure limits based on an 8-
hour TWA.!
!
TLV!mg/m
3
!
PEL!Mppsf!
PEL!mg/m
3
!
Crystalline!Silica!(Quartz)!
(Respirable)!
0.025!mg/m
3!
___
!
250!
%SiO!+!5!
10!mg/m
3!
%SiO!+!2!
Quartz!(Total!Dust)!
___
!
___
!
30!mg/m
3
!
%SiO!+!2!
Calcium!Carbonate!(Total!Dust)!
(Respirable)!
10!mg/m
3
!
___
!
___!
___
!
15!mg/m
3
!
5!mg/m
3
!