Tham khảo tài liệu 'hazardous chemicals handbook 2 episode 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Table Hygiene standards see key and notes on pages 108-110 Threshold limit values USA Occupational exposure limits UK Air odour Substance TWA STEL TWA c STEL c threshold ppm a mg m3 b ppm a mg m3 b ppm mg m3 ppm mg m3 ppm v v Acetaldehyde C25 20 37 50 92 2000 Acetic acid 10 25 15 37 10 25 15 37 21 Acetic anhydride 5C 2 39 Acetone 500 750 750 1810 1500 3620 57 Acetone cyanohydrin Acetonitrile 40 67 60 101 40 68 60 102 Acetophenone 10 Acetylene d d 230 Acetylene dichloride see 1 2-Dichloroethylene Acetylene tetrabromide 1 14 Acetylsalicylic acid aspirin 5 5 Acrolein Acrylamide SK e SK MEL Acrylic acid SK 2 10 30 20 60 110 Acrylonitrile SK 2 e e SK 2 MEL Adipic acid 5 Adiponitrile 2 Aldrin SK SK Allyl alcohol SK SK 2 4 Allyl chloride 1 3 2 6 Allyl glycidyl ether AGE 1 SK 5 24 10 47 Allyl propyl disulphide 2 12 3 18 a-Alumina see Aluminium oxide Aluminium Total inhalable dust 10 Respirable dust 4 Metal dust 10 Pyro powders as Al 5 Welding fumes as Al 5 Alkyls NOC-d as Al 2 Aluminium oxides Total inhalable dust 10 10 Respirable dust 4 Aluminium salts soluble 2 2 4-Aminodiphenyl SK g 2-Aminoethanol see Ethanolamine 2-Aminopyridine 2 2 2 8 Amitrole Ammonia 25 17 35 24 25 18 35 25 Ammonium chloride fume Ammonium perfluorooctanoate Ammonium sulphamate Amosite see Asbestos n-Amyl acetate SK 50 10 10 100 20 50 10 10 270 100 20 20 541 1800 sec-Amyl acetate 50 100 50 270 100 541 61000 Aniline and homologues SK 2 SK 1 4 Anisidine o- p-isomers SK SK Antimony and antimony compounds except stibine as Sb Antimony hydride Stibine Antimony trioxide production g p-Aramid respirable fibres 1 Antu Argon d d Arsenic elemental and inorganic g compounds As except arsine Arsenic trioxide production e Arsine Asbestos all forms g j Fibre cc h Asphalt petroleum fumes .
