Mich. Admin. Code R. 325.60159
Rule 9. Table 5 for substances N to P, are as follows:
TABLE 5 MAXIMUM ALLOWABLE CONCENTRATIONS FOR SUBSTANCES; N TO P | ||||
SUBSTANCE | CAS No.1 | MAC/Ceiling/STEL | ||
ppm | mg/m3 | |||
Naphtha (coal tar) | 8030-30-6 | 100 | 400 | |
Naphtha (petroleum) (MAC will be based on aromatic hydrocarbons in mixture) | ||||
Naphthalene | 91-20-3 | 10 | 50 | |
A | beta-Naphthylamine | 91-59-8 | --- | |
Neon | Inert gas | |||
Nickel carbonyl | 13463-39-3 | 0.001 | 0.007 | |
Nickel, metal and soluble compounds (as Ni) | 7440-02-0 | --- | 1 | |
S | Nicotine | 54-11-5 | --- | 0.5 |
Nitric acid | 7697-37-2 | 2 | 5 | |
Nitric oxide | 10102-43-9 | 25 | 30 | |
S | p-Nitroaniline | 100-01-6 | 1 | 6 |
S | Nitrobenzene | 98-95-3 | 1 | 5 |
S | p-Nitrochlorobenzene | 100-00-5 | --- | 1 |
Nitroethane | 79-24-3 | 100 | 310 | |
Nitrogen | Inert gas | |||
Nitrogen dioxide | 10102-44-0 | 5 | 9 | |
Nitrogen trifluoride | 7783-54-2 | 10 | 29 | |
S | Nitroglycerin | 55-63-0 | 0.2 | 2 |
Nitromethane | 75-52-5 | 100 | 250 | |
1-Nitropropane | 108-03-2 | 25 | 90 | |
2-Nitropropane | 79-46-9 | 25 | 90 | |
S, A | N-Nitrosodimethylamine (dimethylnitroasomine) | 62-75-9 | --- | |
S | Nitrotoluene | Varies with compound | 5 | 30 |
Nitrotrichloromethane | See Chloropicrin | |||
Nitrous oxide | Inert gas | |||
S | Octachloronaphthalene | 2234-13-1 | --- | 0.1 |
Octane | 111-65-9 | 400 | 1,900 | |
Oil mist, particulate | 8012-95-1 | --- | 5 | |
Oil mist, vapor (MAC will be based on aromatic hydrocarbons in mixture) | ||||
Osmium tetroxide | 20816-12-0 | --- | 0.002 | |
Oxalic acid | 144-62-7 | --- | 1 | |
Oxygen difluoride | 7783-41-7 | 0.05 | 0.1 | |
Ozone | 10028-15-6 | 0.1 | 0.2 | |
S | Paraquat | 1910-42-5 2074-50-2 4685-14-7 | --- | 0.5 |
S | Parathion | 56-38-2 | --- | 0.1 |
Pentaborane | 19624-22-7 | 0.005 | 0.01 | |
S | Pentachloronaphthalene | 1321-64-8 | --- | 0.5 |
S | Pentachlorophenol | 87-86-5 | --- | 0.5 |
Pentaerythritol | 115-77-5 | Inert particulate | ||
Pentane | 109-66-0 | 500 | 1,500 | |
2-Pentanone | 107-87-9 | 200 | 700 | |
Perchloroethylene | 127-18-4 | 100 | 670 | |
Perchloromethyl mercaptan | 594-42-3 | 0.1 | 0.8 | |
Perchloryl fluoride | 7616-94-6 | 3 | 13.5 | |
Petroleum distillates (naphtha) (MAC will be based on aromatic hydrocarbons in mixture) | ||||
S | Phenol | 108-95-2 | 5 | 19 |
S | p-Phenylenediamine | 101-84-8 | --- | 0.1 |
Phenyl ether (vapor) | - | 1 | 7 | |
Phenyl ether-biphenyl mixture (vapor) | 8004-13-5 | 1 | 7 | |
Phenylethylene | See Styrene | |||
Phenyl glycidyl ether (PGE) | 122-60-1 | 10 | 60 | |
S | Phenylhydrazine | 100-63-0 | 5 | 22 |
S | Phosdrin (Mevinphos) | 7786-34-7 | --- | 0.1 |
Phosgene (carbonyl chloride) | 75-44-5 | 0.1 | 0.4 | |
Phosphine | 7803-51-2 | 0.3 | 0.4 | |
Phosphoric acid | 7664-38-2 | --- | 1 | |
Phosphorus (yellow) | 7723-14-0 | --- | 0.1 | |
Phosphorus pentachloride | 10026-13-8 | --- | 1 | |
Phosphorus pentasulfide | 1314-80-3 | --- | 1 | |
Phosphorus trichloride | 7719-12-2 | 0.5 | 3 | |
Phthalic anhydride | 85-44-9 | 2 | 12 | |
S | Picric acid | 88-89-1 | --- | 0.1 |
Pival (2-pivalyl-1,3-indandione) | 83-26-1 | --- | 0.1 | |
Plaster of Paris | 26499-65-0 | Inert dust | ||
Platinum, soluble salts (as Pt) | 7440-06-4 | --- | 0.002 | |
Polytetrafluoroethylene decomposition products | See Teflon® decomposition products | |||
Propane | 74-98-6 | Inert gas | ||
S | Propargyl alcohol | 107-19-7 | 1 | --- |
A | beta-Propiolactone | 57-57-8 | --- | |
n-Propyl acetate | 109-60-4 | 200 | 840 | |
Propyl alcohol | 71-23-8 | 200 | 500 | |
n-Propyl nitrate | 627-13-4 | 25 | 110 | |
Propylene dichloride | 78-87-5 | 75 | 350 | |
S | Propylene imine | 75-55-8 | 2 | 5 |
Propylene oxide | 75-56-9 | 100 | 240 | |
Propyne | See Methyl acetylene | |||
Pyrethrum | 8003-34-7 | --- | 5 | |
Pyridine | 110-86-1 | 5 | 15 | |
1 | The CAS number is for information only. Enforcement is based on the substance name. For an entry covering more than 1 metal compound measured as the metal, the CAS number for the metal is given - not the CAS number for the individual compounds. | |||
A | See R 325.60154(2)(a). | |||
C | See R 325.60154(2)(b). | |||
S | See R 325.60154(2)(c). | |||
STEL | See R 325.60154(2)(d). | |||
All MIOSHA Standards shown in this table are referenced in R 325.60151. | ||||
Mich. Admin. Code R. 325.60159