Transcription of SILICA, CRYSTALLINE by IR (KBr pellet) 7602
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SILICA, CRYSTALLINE by IR (KBr pellet) 7602
NIOSH Manual of Analytical Methods (NMAM), Fourth EditionSILICA, CRYSTALLINE by IR ( kbr pellet )7602 SiO2MW: :14808-60-7 RTECS:VV7330000 (quartz) 14464-46-1VV7325000 (cristobalite) 15468-32-3VV335000 (tridymite)METHOD: 7602, Issue 3 EV ALU ATI ON : P ARTIALI ssue 1: 15 February 1984 Issue 3: 15 March 2003OS HA :quartz (respirable): 10 mg/ m3 / (% SiO2 + 2); cristobalite and tridymite (respirable): 1/2 the above NIOSH: mg/m3 ; carcinogensACGIH: quartz (respirable) mg/m3 cristobalite and tridymite (respirable) mg/m3 PROPERTIES:solid; d g/cm3; crystallinetransformation: quartz to tridymite @ 867 C; tridymite to cristobalite @ 1470 C; "-quartz to $-quartz @ 573 CSYNONYMS: free CRYSTALLINE silica ; silicon dioxideSAMPLINGMEASUREMENTSAMPLER:CYCLON E + FILTER (10-mm nylon or Higgins-Dewell (HD), andPVC filter, 37-mm, 5- m)*see sampling sectionFLOW RATE:Nylon L/minVOL-MIN:400 L -MAX:800 LSHIPM ENT:RoutineSAMPLESTABILITY:StableBLANKS: 2 to 10 field blanks per setBULK SAMPLE:High volume or settled dust to identifyinterferencesTECHNIQUE:INFRAR
Silica, Crystalline by IR: Method 7602, Issue 3, dated 15 March 2003 - Page 2 of 6 NIOSH Manual of Analytical Methods (NMAM), Fourth Edition REAGENTS:
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