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,"ก Crystalline Silica Calcium Hydroxide Portland Cement* Particulate Not Otherwise Regulated

("(%20  (L.0O/0ก) 0-90

CAS Number 14808-60-7

15-25 0-10 -

1305-62-0 65997-15-1 NA

OSHA PEL-TWA (mg/m3) [(10)/(%SiO2+2)] (R) ; [(30)/(%SiO2+2)] (T) 15 (T); 5 (R) 15 (T); 5 (R) 15 (T); 5 (R)

ACGIH TLVTWA (mg/m3) 0.025 (R) 5 (T) 10 (R) 10 (T); 3(R)

LD50 LD50 mouse, oral NA NA 7300 mg/kg NA NA

NA NA NA

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CERCLA /Superfund:

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SARA Sections 311 and 312:

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