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Registry of Toxic Effects of Chemical Substances (RTECS)

Styrene, o-chloro-

RTECS #

WL4160000

CAS #

2039-87-4

Updated

September 201

Molecular Weight

138.60

Molecular Formula

C8H7Cl

Synonyms

2-Chlorostyrene
Chlorostyrene
o-Chlorostyrene
o-Chlorostyrene (ACGIH)

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
oral/rabbit lethal dose (50 percent kill): 4230 µL/kgBehavioral: Muscle weakness

Lung, Thorax, or Respiration: Dyspnea

Kidney, Ureter, and Bladder: Other changes in urine composition		NTIS** OTS0555044
oral/rat lethal dose (50 percent kill): 3810 µL/kgBehavioral: Muscle weakness

Lung, Thorax, or Respiration: Dyspnea

Gastrointestinal: Hypermotility, diarrhea		NTIS** OTS0555044

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 50 ppm;short term exposure limit 75 ppmDTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
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 50 ppm (283 mg/m3), short term exposure limit 75 ppm (425 mg/m3), JUL2008
Occupational Exposure Limit-BELGIUMtime-weighted average 50 ppm (287 mg/m3), short term exposure limit 75 ppm (431 mg/m3), MAR2002
Occupational Exposure Limit-DENMARKtime-weighted average 50 ppm (285 mg/m3), MAY2011
Occupational Exposure Limit-FINLANDtime-weighted average 50 ppm (290 mg/m3), short term exposure limit 75 ppm (430 mg/m3), skin, NOV2011
Occupational Exposure Limit-FRANCEVME 50 ppm (285 mg/m3), FEB2006
Occupational Exposure Limit-ICELANDtime-weighted average 50 ppm (285 mg/m3), NOV2011
Occupational Exposure Limit-KOREAtime-weighted average 50 ppm (285 mg/m3), short term exposure limit 75 ppm (430 mg/m3), 2006
Occupational Exposure Limit-MEXICOtime-weighted average 50 ppm (285 mg/m3);short term exposure limit 75 ppm (430 mg/m3), 2004
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 50 ppm (283 mg/m3); short term exposure limit 75 ppm (425 mg/m3), JAN2002
Occupational Exposure Limit-NORWAYtime-weighted average 25 ppm (140 mg/m3), JAN1999
Occupational Exposure Limit-PERUtime-weighted average 50 ppm (283 mg/m3); short term exposure limit 75 ppm (425 mg/m3), JUL2005
Occupational Exposure Limit-SWITZERLANDMAK-week 50 ppm (285 mg/m3), JAN2011
Occupational Exposure Limit-THE NETHERLANDSMAC-TGG 285 mg/m3, 2003

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO o-CHLOROSTYRENE-air10H time-weighted average 50 ppm;short term exposure limit 75 ppmNIOSH* DHHS #95-121,1995

Status in Federal Agencies

OrganizationReference
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001

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