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Registry of Toxic Effects of Chemical Substances (RTECS)

Yttrium

RTECS #

ZG2980000

CAS #

7440-65-5

Updated

September 2013

Molecular Weight

88.91

Molecular Formula

Y

Synonyms

Yttrium (ACGIH:OSHA)
Yttrium-89

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 1 mg/m3DTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARD-airtime-weighted average 1 mg/m3DTLVS* 3,283,1971
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRALIAtime-weighted average 1 mg/m3, JUL2008
Occupational Exposure Limit-AUSTRIAMAK-TMW 1 mg/m3;KZW 10 mg/m3, resp, 2007
Occupational Exposure Limit-BELGIUMtime-weighted average 1 mg/m3, MAR2002
Occupational Exposure Limit-DENMARKtime-weighted average 1 mg(Y)/m3 (dust), MAY2011
Occupational Exposure Limit-FRANCEVME 1 mg/m3, FEB2006
Occupational Exposure Limit-ICELANDtime-weighted average 1 mg/m3, dust, NOV2011
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 1 mg/m3, JAN2002
Occupational Exposure Limit-PERUtime-weighted average 1 mg/m3, JUL2005
Occupational Exposure Limit-POLANDMAC(time-weighted average) 1 mg/m3, JAN1999
Occupational Exposure Limit-THE NETHERLANDSMAC-TGG 1 mg/m3, 2003
Occupational Exposure Limit-THE PHILIPPINEStime-weighted average 5 ppm (25 mg/m3), JAN1993
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 1 mg/m3;short term exposure limit 3 mg/m3, skin, OCT2007
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)8H time-weighted average 1 mg/m3CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors)8H time-weighted average 1 mg/m3CFRGBR 41,50-204.50,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)8H time-weighted average 1 mg/m3CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)8H time-weighted average 1 mg/m3CFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO YTTRIUM-air10H time-weighted average 1 mg/m3NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code 77055; Number of Industries 7; Total Number of Facilities 361; Number of Occupations 5; Total Number of Employees Exposed 3131; Total Number of Female Employees Exposed 1208
National Occupational Hazard Survey 1974Hazard Code 77055; Number of Industries 1; Total Number of Facilities 48; Number of Occupations 1; Total Number of Employees Exposed 240

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA Section 8(d) unpublished health/safety studies
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
NIOSH Analytical Method, 1994: Elements by ICP, 7300
OSHA ANALYTICAL METHOD #ID121
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