The classification list provided in this document was compiled in response to requests for information concerning classifications under federal legislation on hazardous products. Please note that this is not an exhaustive list of hazardous products according to WHMIS 2015.

This classification was established by CNESST personnel to the best of their knowledge based on data obtained from scientific literature and it incorporates the criteria contained in the Hazardous Products Regulations (SOR/2015-17). It does not replace the supplier’s classification which can be found on its Safety Data Sheet.

Since the list contains many product names (2419​​​), it is arranged alphabetically, according to the first letter of the name. Click on the letters below to access the product lists.

Useful tip: To use the WHMIS product list in a spreadsheet, download the text (CSV) file containing the WHMIS classification. The key of this file. Please take note that field delimiter is "|" (ascii 124).

View full list (PDF, 1143 kb).

Substances débutant par la lettre M affichées

Magnesium

CAS number : 7439-95-4

UN number : UN1869

Magnesium (powder)

CAS number : 7439-95-4

UN number : UN1418

Magnesium acetate

CAS number : 142-72-3

Magnesium acetate tetrahydrate

CAS number : 16674-78-5

Magnesium carbonate

CAS number : 546-93-0

Magnesium chloride

CAS number : 7786-30-3

Magnesium chloride hexahydrate

CAS number : 7791-18-6

Magnesium citrate

CAS number : 3344-18-1

Magnesium fluoride

CAS number : 7783-40-6

Magnesium hydroxide

CAS number : 1309-42-8

Magnesium nitrate hexahydrate

CAS number : 13446-18-9

UN number : UN1474

Magnesium oxide

CAS number : 1309-48-4

Magnesium sulfate

CAS number : 7487-88-9

Magnesium sulfate heptahydrate

CAS number : 10034-99-8

Malachite green

CAS number : 569-64-2

Malathion

CAS number : 121-75-5

Maleic anhydride

CAS number : 108-31-6

UN number : UN2215

Malic acid

CAS number : 6915-15-7

Malonic acid

CAS number : 141-82-2

Maltose

CAS number : 69-79-4

Maltose monohydrate

CAS number : 6363-53-7

Mancozeb

CAS number : 8018-01-7

Manganese carbonate

CAS number : 598-62-9

Manganese cyclopentadienyl tricarbonyl

CAS number : 12079-65-1

Manganese dichloride

CAS number : 7773-01-5

Manganese dioxide

CAS number : 1313-13-9

Manganese disulfide

CAS number : 12125-23-4

Manganese methylcyclopentadienyl tricarbonyl

CAS number : 12108-13-3

Manganese powder

CAS number : 7439-96-5

UN number : UN2813

Manganese sulfate

CAS number : 7785-87-7

Manganese tetroxide

CAS number : 1317-35-7

Manganese(II) sulfate monohydrate

CAS number : 10034-96-5

Manganese, elemental

CAS number : 7439-96-5

Manganous phosphate

CAS number : 14154-09-7

Manganous sulfide

CAS number : 18820-29-6

Mannose

CAS number : 3458-28-4

Marble

Marcasite

CAS number : 1317-66-4

Medium aliphatic solvent naphtha (petroleum) C9-C12

CAS number : 64742-88-7

Melibiose

CAS number : 585-99-9

Menhaden oil

CAS number : 8002-50-4

Menthol

CAS number : 89-78-1

2-Mercaptoethanol

CAS number : 60-24-2

UN number : UN2966

Mercuric acetate

CAS number : 1600-27-7

UN number : UN1629

Mercuric bromide

CAS number : 7789-47-1

UN number : UN1634

Mercuric chloride

CAS number : 7487-94-7

UN number : UN1624

Mercuric chromate

CAS number : 13444-75-2

Mercuric iodide

CAS number : 7774-29-0

UN number : UN1638

Mercuric nitrate

CAS number : 10045-94-0

UN number : UN1625

Mercuric oxide

CAS number : 21908-53-2

UN number : UN1641

Mercuric sulfate

CAS number : 7783-35-9

UN number : UN1645

Mercuric thiocyanate

CAS number : 592-85-8

UN number : UN1646

Mercurous bromide

CAS number : 15385-58-7

UN number : UN1634

Mercury

CAS number : 7439-97-6

UN number : UN2809

Mercury(I) chloride

CAS number : 10112-91-1

Mercury(I) sulfate

CAS number : 7783-36-0

UN number : UN1645

Mesityl oxide

CAS number : 141-79-7

UN number : UN1229

Mesitylene

CAS number : 108-67-8

UN number : UN2325

Mesotartaric acid

CAS number : 147-73-9

meta-Chlorostyrene

CAS number : 2039-85-2

Metaldehyde

CAS number : 9002-91-9

UN number : UN1332

Metanilic acid

CAS number : 121-47-1

Metaphosphorique acide

CAS number : 37267-86-0

Metasilicic acid

CAS number : 7699-41-4

Methacrylic acid

CAS number : 79-41-4

UN number : UN2531

Methacrylic acid, polymer with ethyl acrylate and methyl methacrylate

CAS number : 25133-97-5

Methane

CAS number : 74-82-8

UN number : UN1971

Methanethiol

CAS number : 74-93-1

UN number : UN1064

Methanolamine

CAS number : 3088-27-5

Methenamine

CAS number : 100-97-0

UN number : UN1328

d-Methionine

CAS number : 348-67-4

Methomyl

CAS number : 16752-77-5

2-Methoxybenzaldehyde

CAS number : 135-02-4

4-Methoxybenzaldehyde

CAS number : 123-11-5

3-Methoxybenzaldehyde

CAS number : 591-31-1

2-Methoxypropene

CAS number : 116-11-0

Methyl 3-mercaptopropionate

CAS number : 2935-90-2

Methyl acetate

CAS number : 79-20-9

UN number : UN1231

Methyl acetylene-Propadiene mixture (MAPP)

CAS number : 59355-75-8

UN number : UN1060

Methyl acrylate

CAS number : 96-33-3

UN number : UN1919

Methyl alcohol

CAS number : 67-56-1

UN number : UN1230

Methyl alcohol 28%

UN number : UN1993

Methyl bromide

CAS number : 74-83-9

UN number : UN1062

Methyl butyl ketone

CAS number : 591-78-6

Methyl caprate

CAS number : 110-42-9

Methyl chloride

CAS number : 74-87-3

UN number : UN1063

Methyl cyanoformate

CAS number : 17640-15-2

Methyl ethyl ketone

CAS number : 78-93-3

UN number : UN1193

Methyl ethyl ketone peroxide

CAS number : 1338-23-4

Methyl fluoride

CAS number : 593-53-3

UN number : UN2454

Methyl formate

CAS number : 107-31-3

UN number : UN1243

Methyl heptyl ketone

CAS number : 58654-67-4

Methyl iodide

CAS number : 74-88-4

UN number : UN2644

Methyl isoamyl ketone

CAS number : 110-12-3

UN number : UN2302

Methyl isobutyl ketone

CAS number : 108-10-1

UN number : UN1245

Methyl isocyanate

CAS number : 624-83-9

UN number : UN2480

Methyl isopropenyl ketone

CAS number : 814-78-8

UN number : UN1246

Methyl isopropyl ketone

CAS number : 563-80-4

UN number : UN2397

METHYL LAURATE

CAS number : 111-82-0

Methyl methacrylate

CAS number : 80-62-6

UN number : UN1247

Methyl methacrylate polymer

CAS number : 9011-14-7

Methyl methacrylate-butyl acrylate-styrene copolymer

CAS number : 27136-15-8

METHYL MYRISTATE

CAS number : 124-10-7

Methyl n-amyl ketone

CAS number : 110-43-0

UN number : UN1110

METHYL OLEATE

CAS number : 112-62-9

METHYL PALMITATE

CAS number : 112-39-0

Methyl parathion

CAS number : 298-00-0

Methyl phenylacetate

CAS number : 101-41-7

Methyl propionate

CAS number : 554-12-1

UN number : UN1248

Methyl propyl ketone

CAS number : 107-87-9

UN number : UN1249

N-Methyl pyrrolidone

CAS number : 872-50-4

Methyl red

CAS number : 493-52-7

Methyl salicylate

CAS number : 119-36-8

Methyl silicate

CAS number : 681-84-5

UN number : UN2606

METHYL STEARATE

CAS number : 112-61-8

Methyl tert-butyl ether

CAS number : 1634-04-4

UN number : UN2398

Methyl-2 propane

CAS number : 75-28-5

UN number : UN1969

6-Methyl-2-benzothiazolyl-4-amino phenyl

CAS number : 92-36-4

Methyl-2-cyanoacrylate

CAS number : 137-05-3

n-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine

CAS number : 28289-54-5

o-Methylacetanilide

CAS number : 120-66-1

Methylacetylene

CAS number : 74-99-7

UN number : UN1954

Methylacrylonitrile

CAS number : 126-98-7

Methylal

CAS number : 109-87-5

UN number : UN1234

Methylamine

CAS number : 74-89-5

UN number : UN1061

Methylamine 40%

UN number : UN1235

Methylamine hydrochloride

CAS number : 593-51-1

Methylamyl alcohol

CAS number : 108-11-2

UN number : UN2053

N-Methylaniline

CAS number : 100-61-8

UN number : UN2294

2-Methylaziridine

CAS number : 75-55-8

UN number : UN1921

p-Methylbenzyl alcohol

CAS number : 589-18-4

2-Methylbenzyl alcohol

CAS number : 89-95-2

3-Methylbenzyl alcohol

CAS number : 587-03-1

2-Methylbutane

CAS number : 78-78-4

UN number : UN1265

Methylchloromethyl ether

CAS number : 107-30-2

UN number : UN1239

3-Methylcholanthrene

CAS number : 56-49-5

5-Methylchrysene

CAS number : 3697-24-3

Methylcyclohexane

CAS number : 108-87-2

UN number : UN2296

4-Methylcyclohexanol

CAS number : 589-91-3

UN number : UN2617

3-Methylcyclohexanol

CAS number : 591-23-1

UN number : UN2617

2-Methylcyclohexanol

CAS number : 583-59-5

UN number : UN2617

Methylcyclohexanol (mixed isomers)

CAS number : 25639-42-3

UN number : UN2617

3-Methylcyclohexanone

CAS number : 591-24-2

UN number : UN2297

4-Methylcyclohexanone

CAS number : 589-92-4

UN number : UN2297

2-Methylcyclohexanone

CAS number : 583-60-8

UN number : UN2297

Methylcyclohexanone (mixed isomers)

CAS number : 1331-22-2

UN number : UN2297

3-Methylcyclopentanone

CAS number : 1757-42-2

Methylene blue

CAS number : 61-73-4

Methylene bromide

CAS number : 74-95-3

UN number : UN2664

Methylene chloride

CAS number : 75-09-2

UN number : UN1593

4,4'-Methylenebis(2-chloroaniline)

CAS number : 101-14-4

2-Methylfuran

CAS number : 534-22-5

UN number : UN2301

Methylglycol acetate

CAS number : 110-49-6

UN number : UN1189

3-Methylhexane

CAS number : 589-34-4

UN number : UN1206

1-Methylhydantoin-2-imide

CAS number : 60-27-5

Methylhydrazine

CAS number : 60-34-4

UN number : UN1244

Methylmercuric dicyanamide

CAS number : 502-39-6

Methylmercury chloride

CAS number : 115-09-3

1-Methylnaphthalene

CAS number : 90-12-0

2-Methylnaphthalene

CAS number : 91-57-6

Methylnitropropyl-4-nitrosoaniline

CAS number : 24458-48-8

n-Methyl-p-aminophenol sulfate

CAS number : 55-55-0

3-Methylpentane

CAS number : 96-14-0

UN number : UN1208

2-Methylpentane

CAS number : 107-83-5

UN number : UN1208

2-Methylpentane

CAS number : 73513-42-5

UN number : UN1208

2-Methylpentanoic acid

CAS number : 97-61-0

1-Methylphenanthrene

CAS number : 832-69-9

N-Methyl-p-phenylenediamine dihydrochloride

CAS number : 5395-70-0

Alpha-methylstyrene

CAS number : 98-83-9

UN number : UN2303

Mica (containing less than 1% quartz)

CAS number : 12001-26-2

Microcrystalline cellulose

CAS number : 9004-34-6

Middle distillate solvent extract (petroleum)

CAS number : 64742-06-9

Mineral oil

CAS number : 8012-95-1

Molybdate orange

CAS number : 12656-85-8

Molybdenum

CAS number : 7439-98-7

Molybdenum dichloride

CAS number : 13478-17-6

Molybdenum dioxide

CAS number : 18868-43-4

Molybdenum sulfide

CAS number : 1317-33-5

Molybdenum tetrabromide

CAS number : 13520-59-7

Molybdic acid

CAS number : 7782-91-4

Monosodium ferric EDTA

CAS number : 15708-41-5

Monosodium phosphate

CAS number : 7558-80-7

Montmorillonite

CAS number : 1318-93-0

Morpholine

CAS number : 110-91-8

UN number : UN2054