NIOSH

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National Institute for Occupational Safety and Health

 (NIOSH)
an organizational component of the centers for disease control and prevention, charged with ensuring safety and health for all people in the workplace through research and prevention.

NIOSH

NIOSH

National Institute for Occupational Safety & Health, see there.
NIOSH Recommendations for Safety & Health Standards
Agent  NIOSH REL*/OSHA PEL  Health effects
Acetylene ≤2500 ppm/2500 ppm Asphyxia
Alkanes-octane 75 ppm (≤385 15 min)/500 ppm Skin, CNS
Ammonia 50 ppm/50 ppm Respiratory and ocular irritant
Benzene  0.1 ppm, TWA†† (< 1 ppm 15 min)/
   1 ppm, TWA (<5 ppm 15 min) Leukemia
Carbon tetrachloride 2 ppm ceiling/20 ppm (100 ppm 30 min) Liver cancer
Chlorine  0.5 ppm (15 min)/1 ppm (15 min) Respiratory and ocular irritant
Ethylene oxide 0.1 TWA (5 ppm 10 min)/1 ppm TWA Mutations, leukemia, mesothelioma
Formaldehyde 0.16 ppm (1 ppm 15 min)/
   1 ppm, TWA (2 ppm 15 min) Nasal cancer
Hydrogen cyanide 4.7 ppm (10 min ceiling)/10 ppm Blood, thyroid, respiratory effects
Hydrogen sulfide 10 ppm/20 ppm (50 ppm 10min) Irritation-CNS, respiratory effects
Methylene chloride As low as possible/500 ppm  Cancer
 (2000 ppm 5 min)
Nitric oxide 2 ppm/2ppm Dental erosion, nasal, lung irritation
Nitroglycerin 0.1 mg/m3 (20 min)/2 mg/m3  Circulatory effects
Phenol  5.2 ppm (15.6 15 min)/5 ppm Skin, eye, CNS, liver, kidney effects
Sulfuric acid 1 mg/m3/ 1 mg/m3 avoid skin & eye contact Pulmonary irritation
Toluene  100 ppm (200 ppm 10 min)/
   200 ppm (500 ppm 10 min) CNS depression
Xylene  100 ppm (200 ppm 10 min)/100 ppm CNS depression, lung irritation
*Relative exposure limit
Permissible exposure limit
††8 hr-time weighted average; all time values refer to 'ceiling' levels
Complete NIOSH table is available from Pubs Dissemination, Div Standards Development & Tech Transfer, NIOSH, 4676 Colombia Pkwy, 45226 ☎ 1.513.533.8287

NIOSH

(nī'osh)

NIOSH

Abbreviation for National Institute for Occupational Safety and Health.