NIOSH (redirected from NIOSH Recommendations for Safety & Health Standards)

NIOSH,

abbreviation for National Institute for Occupational Safety and Health.

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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