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CALCIUM and compounds, as Ca: METHOD 7020, Issue 2, dated 15 August 1994 - Page 4 of 4
TABLE 1: General Information
FORMULA
M.W.
CAS #
RTECS #
EXPOSURE LIMITS (mg/m 3) OSHA NIOSH ACGIH
Ca
40.08
7440-70-2
EV8040000
--
--
CaO
56.08
1305-78-8
EW3100000
5
2
2
Ca(OH) 2
74.10
1305-62-0
EW2800000
None
5
5
Ca(CO 3)2 total dust
100.09
471-34-1
EV9580000
15 (total); 10 (total); 10 5 (resp.) 5 (resp.)
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
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