Source Amplifiers (CEDs000505)

Source ID	CEDs000505
Name	Amplifiers
Sector	Electrical & Electronic Equipment
Description	Amplifiers, commonly used in various electronic devices to enhance signal strength, can be a source of synthetic chemical contamination due to the materials and processes involved in their production and disposal. These devices typically contain a variety of synthetic chemicals, including polymers, metals, and conductive compounds, which may leach into the environment during manufacturing, use, or end-of-life disposal. In particular, the solder used in circuit boards often contains lead and other heavy metals, which can contaminate soil and water if not properly managed. Additionally, solvents and chemicals used in the cleaning and assembly processes may contribute to volatile organic compound (VOC) emissions. Proper handling, recycling, and disposal practices are essential to mitigate the risks associated with chemical contamination from amplifiers.

Synthetic Chemicals

Contaminant Source Sector

Health Effect

Classification

Toxin Types

Chemical Roles

Biological Roles

Industrial Roles

Search Compounds

Displaying compounds 2,801 – 2,825 of 2,914 in total

SynCED ID ▲	Name ⇅ CAS Number	Formula Monoisotopic Mass ⇅ Avg Mass ⇅	Sources
CED0183066	1-n,4-n-bis(4-methylphenyl)-1-n,4-n-diphenylbenzene-1,4-diamine CAS138171-14-9	C₃₂H₂₈N₂ monoisotopic mass440.225 Average mass440.600	Amplifiers Ceramics Conductors Or Conductive Bodies Characterised By The Conductive Materials Electrodes Inks Jewellery Nanotechnology
CED0183596	2-Methyl-1-[4-(trifluoromethoxy)phenyl]propan-1-one CAS56425-84-4	C₁₁H₁₁F₃O₂ monoisotopic mass232.071 Average mass232.202	Amplifiers
CED0184381	1-n,3-n-bis(4-methylphenyl)benzene-1,3-diamine CASNot Available	C₂₀H₂₀N₂ monoisotopic mass288.163 Average mass288.400	Amplifiers Antennas Apparel Erasers Footwear Nanotechnology Paper Ropes Yarns Or Threads
CED0184693	3-[2-[ethyl(methyl)amino]ethyl]-1h-indol-4-ol CAS77872-41-4	C₁₃H₁₈N₂O monoisotopic mass218.142 Average mass218.290	Amplifiers Antennas Apparel Bleaching Agents Brushes Card Games Ceramics Chemical Igniters Cigar Cigarettes Clay Wares Colour Television Systems Coloured Pencils Conductors Or Conductive Bodies Characterised By The Conductive Materials Discharge Lamps Discharge Tubes With Liquid Pool Cathodes Effluent Electric Switches Electrodes Embossing Machines Embroidering And Tufting Emergency Protective Devices Erasers Eye Makeup Products Floors Food Preservation Footwear Fuses Game Accessories Glass Coatings Headwear Inks Jewellery Leather Tanning Line Transmission Systems Lip Care Products Lip Makeup Products Making Cigars Manicure Pedicure Manufacture Preparation Of Tobacco Products Multicolour Dyeing Nanotechnology Nitrogenous Fertilisers Paper Paper Making Machines Pens Perfumes Within Detergents And Soaps Pigment Pastes Pipe Accessories Printing Machines Or Presses Processing Meats Purses Luggage Hand Bags Radio Transmission Systems Roulette Games Sewing Silica Free Oxide Glass Silica Glass Soap Detergents Solid Fire Fighting Substances Submarines Television Systems Tobacco Smoke Filters Toys Transfer Printing Video Games Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0184819	5-chloro-1,3-dimethyl-n-(1,1,3-trimethyl-3h-2-benzofuran-4-yl)pyrazole-4-carboxamide CAS123572-88-3	C₁₇H₂₀ClN₃O₂ monoisotopic mass333.124 Average mass333.800	Acaricides Aftershave Aftersun Products Airplanes And Helicopters Amplifiers Anchoring Equipment Antennas Anti Perspirants Or Body Deoderants Apparel Ash Trays Auxiliary Devices Ballast water Bilge water Bleaching Agents Body Washing Or Cleaning Implements Bookbinding Books Bridle Bits Brushes Buckles Buoys Card Games Cements Ceramics Chutes And Slides Cigar Cigarettes Coils Communication Cables Or Conductors Electric Hearing Aids Electric Switches Electrodes Embossing Machines Emergency Protective Devices Essential Oils Or Perfumes Eye Makeup Products Fencing Fertiliser Distributors Fixed Capacitors And Their Manufacture Floors Food Preservation Footwear Headwear Herbicides And Algicides Horse Reins Ink Reservoir Pens Inks Insecticides Jewellery Key Rings Ladders Leather Tanning Lifeboats Light Than Air Aircraft Lip Care Products Lip Makeup Products Making Cigars Manicure Pedicure Manufacture Of Iron Or Steel Manufacture Preparation Of Tobacco Products Marine Propulsion Or Steering Merry Go Rounds Mining Or Quarrying Molasses And Treatment Of Molasses Molluscicides Nanotechnology Nematocides Nitrogenous Fertilisers Paper Paper Making Machines Perfumes Within Detergents And Soaps Pest Repellants Phosphatic Fertilisers Pigment Pastes Pins Clothes Plant Growth Regulators Power Cables Preparation Of Malt Printing Machines Or Presses Processing Fish Processing Meats Purses Luggage Hand Bags Radio Transmission Systems Relays Rodenticides Rodenticides(1) Roofs Ropes Sewing Ship Hulls Ships Sludge Treatment Soap Detergents Soap Dispensers Stairs And Ramps Stamps Stormwater runoff Submarines Sunshades Awnings Or Outside Screens Surface Finishing Of Leather Television Systems Tents Or Canopies Tobacco Smoke Filters Toys Umbrellas Unmanned Aerial Vehicles Video Games Walking Sticks Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0185767	Ethyl 6-bromo-5-hydroxy-1-methyl-2-(phenylsulfanylmethyl)indole-3-carboxylate CASNot Available	C₁₉H₁₈BrNO₃S monoisotopic mass419.019 Average mass420.300	Amplifiers Ceramics Coating Compositions Cores Yokes Or Armatures Electrodes Inks Magnets Nanotechnology Paper Radio Transmission Systems Water, Wastewater, & Sewage Treatment
CED0185852	2-piperidin-1-ylethyl n-(2-decoxyphenyl)carbamate CAS98495-43-3	C₂₄H₄₀N₂O₃ monoisotopic mass404.304 Average mass404.600	Amplifiers Antennas Coating Compositions Conductors Or Conductive Bodies Characterised By The Conductive Materials Electrodes Essential Oils Or Perfumes Fixed Capacitors And Their Manufacture Footwear Herbicides And Algicides Hybrid Capacitors Inks Nanotechnology Paper Perfumes Within Detergents And Soaps Pest Repellants Radio Transmission Systems Water, Wastewater, & Sewage Treatment
CED0185862	1-diphenylphosphanylethenyl(diphenyl)phosphane CAS84494-89-3	C₂₆H₂₂P₂ monoisotopic mass396.120 Average mass396.400	Amplifiers Conductors Or Conductive Bodies Characterised By The Conductive Materials Electrodes Food Preservation Nanotechnology
CED0186786	alcohols, C12-15 CAS63393-82-8	C₁₄H₃₀O monoisotopic mass214.230 Average mass214.387	Acaricides Aftershave Aftersun Products Airplanes And Helicopters Amplifiers Antennas Anti Perspirants Or Body Deoderants Apparel Azo Dyes Blackboard Eraser Bleaching Agents Body Washing Or Cleaning Implements Brushes Ceilings Cements Ceramics Chemosterilants Cigar Cigarettes Clay Wares Coating Compositions Coils Coloured Pencils Combination Pens Conductors Or Conductive Bodies Characterised By The Conductive Materials Cooling Circuit Water Cores Yokes Or Armatures Decorating Textiles Degreasing Leather Depilatories Drinking water Electric Switches Electrically Stimulated Smoking Devices Electrodes Embroidering And Tufting Emergency Protective Devices Erasers Essential Oils Or Perfumes Explosives Eye Makeup Products Face Mask Cosmetics Fermentation Processes For Beer Fertiliser Distributors Fire Extinguishers Fire Fighting Gels Fixed Capacitors And Their Manufacture Floors Foam Dyeing Food Food Preservation Footwear Fountain Pens Glass Coatings Glass Fibres Headwear Herbicides And Algicides Hybrid Capacitors Indoor air Ink Reservoir Pens2 Inks Insecticides Jewellery Leather Tanning Lime Line Transmission Systems Lip Care Products Lip Makeup Products Making Cigars Manicure Pedicure Manufacture Of Iron Or Steel Manufacture Preparation Of Tobacco Products Merry Go Rounds Mining Or Quarrying Molasses And Treatment Of Molasses Molluscicides Multicolour Dyeing Nanotechnology Nematocides Nitrogenous Fertilisers Non-PFAS Fire Fighting Foam Other Smoking Requisites PFAS Fire Fighting Foam Paper Paper Making Machines Pens Perfumes Within Detergents And Soaps Pest Attractants Pest Repellants Pharmaceuticals Phosphatic Fertilisers Pigment Pastes Pipe Accessories Plant Growth Regulators Power Cables Preparation Of Wine Or Sparkling Wine Preparation Of Wort Printing Machines Or Presses Purses Luggage Hand Bags Rodenticides Rodenticides(1) Roofs Ropes Silica Free Oxide Glass Silica Glass Slide Fasteners Sludge Treatment Soap Detergents Soap Dispensers Solid Fire Fighting Substances Stamps Surface Finishing Of Leather Tobacco Pipes Tobacco Smoke Filters Toys Transfer Printing Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0186792	2,2-dioctyl-1,3,2-dioxastannepine-4,7-dione CASNot Available	C₂₀H₃₆O₄Sn monoisotopic mass460.164 Average mass459.200	Airplanes And Helicopters Amplifiers Antennas Apparel Brushes Ceramics Coating Compositions Conductors Or Conductive Bodies Characterised By The Conductive Materials Decorating Textiles Electrodes Eye Makeup Products Footwear Glass Coatings Inks Nanotechnology Paper Power Cables Transfer Printing Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0186846	3-(Octadecyloxy)-1,2-propanediol CAS544-62-7	C₂₁H₄₄O₃ monoisotopic mass344.329 Average mass344.580	Acaricides Aftershave Aftersun Products Airplanes And Helicopters Amplifiers Antennas Anti Perspirants Or Body Deoderants Apparel Auxiliary Devices Azo Dyes Bleaching Agents Body Washing Or Cleaning Implements Brushes Cements Ceramics Cheese Making Cigar Cigarettes Clay Wares Coating Compositions Coloured Pencils Conductors Or Conductive Bodies Characterised By The Conductive Materials Cooling Circuit Water Decorating Textiles Degreasing Leather Depilatories Electrically Stimulated Smoking Devices Electrodes Embossing Tools Embroidering And Tufting Erasers Essential Oils Or Perfumes Explosives Eye Makeup Products Face Mask Cosmetics Fermentation Processes For Beer Fire Fighting Gels Fixed Capacitors And Their Manufacture Foam Dyeing Food Preservation Footwear Fountain Pens Glass Coatings Herbicides And Algicides Hybrid Capacitors Ink Reservoir Pens2 Inks Insecticides Jewellery Leather Tanning Line Transmission Systems Lip Care Products Lip Makeup Products Magnets Making Cigars Manufacture Of Iron Or Steel Manufacture Preparation Of Tobacco Products Molasses And Treatment Of Molasses Molluscicides Multicolour Dyeing Nanotechnology Nematocides Nitrogenous Fertilisers Non Electric Simulated Smoking Devices Non-PFAS Fire Fighting Foam Other Smoking Requisites PFAS Fire Fighting Foam Paper Paper Making Machines Pencils Perfumes Within Detergents And Soaps Pest Attractants Pest Repellants Phosphatic Fertilisers Pigment Pastes Pipe Accessories Plant Growth Regulators Preparation Of Malt Preparation Of Vinegar Preparation Of Wine Or Sparkling Wine Preparation Of Wort Printing Machines Or Presses Processing Meats Purses Luggage Hand Bags Relays Rodenticides Rodenticides(1) Ropes Selectors Silica Glass Slide Fasteners Sludge Treatment Soap Detergents Soap Dispensers Surface Finishing Of Leather Television Systems Tobacco Product Cases Tobacco Smoke Filters Toys Transfer Printing Treatment Of Hops Treatment Of Milk Or Cream Watch Chains Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0187653	Cyclopropane, 1,1-diethyl- CAS1003-19-6	C₇H₁₄ monoisotopic mass98.110 Average mass98.189	Amplifiers Electrodes Fixed Capacitors And Their Manufacture Food Preservation Nanotechnology Radio Transmission Systems
CED0188455	2-({2-[(carboxymethyl)({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methyl)amino]ethyl}({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methyl)amino)acetic acid CAS118248-91-2	C₂₂H₃₂N₄O₁₄P₂ monoisotopic mass638.139 Average mass638.460	Airplanes And Helicopters Amplifiers Antennas Apparel Auxiliary Devices Electric Switches Electrodes Emergency Protective Devices Nanotechnology Paper Radio Transmission Systems Relays Silica Free Oxide Glass Tobacco Smoke Filters Yarns Or Threads
CED0188717	Potassium dodecyl sulphate (C12 ASO4 K) CAS4706-78-9	C₁₂H₂₆O₄S monoisotopic mass266.155 Average mass266.397	Acaricides Aftershave Aftersun Products Amplifiers Antennas Anti Perspirants Or Body Deoderants Apparel Auxiliary Devices Ballast water Bilge water Bleaching Agents Body Washing Or Cleaning Implements Brushes Buoys Cements Ceramics Clay Wares Coastal Sea Water Coating Compositions Coloured Pencils Conductors Or Conductive Bodies Characterised By The Conductive Materials Cooling Circuit Water Depilatories Electric Switches Electrodes Emergency Protective Devices Essential Oils Or Perfumes Explosives Eye Makeup Products Fire Extinguishers Fire Fighting Gels Fixed Capacitors And Their Manufacture Foam Dyeing Food Preservation Food contact materials Foods Footwear Glass Coatings Herbicides And Algicides Hybrid Capacitors Indoor air Inks Insecticides Jewellery Leather Tanning Lip Care Products Lip Makeup Products Manicure Pedicure Manufacture Of Iron Or Steel Manufacture Preparation Of Tobacco Products Molluscicides Nanotechnology Nitrogenous Fertilisers Non-PFAS Fire Fighting Foam PFAS Fire Fighting Foam Paper Paper Making Machines Perfumes Within Detergents And Soaps Personal Care Products Pest Repellants Pharmaceutical Products Phosphatic Fertilisers Pigment Pastes Plant Growth Regulators Radio Transmission Systems Relays Shampoos Silica Glass Sludge Treatment Soap Detergents Soap Dispensers Soaps Solid Fire Fighting Substances Surface Finishing Of Leather Thin Magnetic Films Tobacco Product Moisture Control Tobacco Smoke Filters Toothpaste Toys Waste Water Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0188735	(RS)-(+/-)-sulpiride CAS15676-16-1	C₁₅H₂₃N₃O₄S monoisotopic mass341.141 Average mass341.426	Acaricides Adjustable Resistors Aftershave Aftersun Products Airplanes And Helicopters Amplifiers Anchoring Equipment Antennas Anti Perspirants Or Body Deoderants Apparel Auxiliary Devices Bleaching Agents Brushes Card Games Ceramics Cigar Cigarettes Coils Communication Cables Or Conductors Conductors Or Conductive Bodies Characterised By The Conductive Materials Cores Yokes Or Armatures Credit Card Holders Depilatories Electric Hearing Aids Electric Switches Electrically Stimulated Smoking Devices Electrodes Embroidering And Tufting Emergency Protective Devices Essential Oils Or Perfumes Explosives Eye Makeup Products Face Mask Cosmetics Fermentation Processes For Beer Fixed Capacitors And Their Manufacture Food Preservation Footwear Gas Filled Discharge Tubes With Solid Cathode Headwear Herbicides And Algicides Hybrid Capacitors Inks Insecticides Jewellery Ladders Lawn Mowers Lifeboats Light Than Air Aircraft Line Transmission Systems Loudspeakers Magnets Manicure Pedicure Manufacture Of Iron Or Steel Manufacture Preparation Of Tobacco Products Marine Propulsion Or Steering Microphones Mining Or Quarrying Multicolour Dyeing Nanotechnology Nematocides Nitrogenous Fertilisers Non Electric Simulated Smoking Devices Other Smoking Requisites Paper Paper Making Machines Perfumes Within Detergents And Soaps Pest Attractants Pest Repellants Phosphatic Fertilisers Pigment Pastes Pipe Accessories Plant Growth Regulators Power Cables Preparation Of Wort Printing Machines Or Presses Processing Fish Processing Meats Purses Luggage Hand Bags Radio Transmission Systems Roofs Ropes Rosaries Saddles Sewing Ships Sludge Treatment Soap Detergents Soap Dispensers Sparking Plugs Stairs And Ramps Stamps Still Video Cameras Submarines Sunshades Awnings Or Outside Screens Sunshades Awnings Or Outside Screens Superconductive Or Hyperconductive Conductors Cables Or Transmission Lines Television Systems Tents Or Canopies Tobacco Smoke Filters Toys Umbrellas Unmanned Aerial Vehicles Ventilation Of Mines Or Tunnels Video Games Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0188782	2-[4,5-bis[[bis(pyridin-2-ylmethyl)amino]methyl]-2,7-dichloro-3-hydroxy-6-oxoxanthen-9-yl]benzoic acid CASNot Available	C₄₆H₃₆Cl₂N₆O₅ monoisotopic mass822.212 Average mass823.700	Amplifiers Antennas Ceramics Electrodes Fixed Capacitors And Their Manufacture Food Preservation Glass Coatings Nanotechnology Paper Radio Transmission Systems Water, Wastewater, & Sewage Treatment
CED0189630	Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-me CAS4767-03-7	C₅H₁₀O₄ monoisotopic mass134.058 Average mass134.131	Acaricides Aftershave Aftersun Products Airplanes And Helicopters Amplifiers Antennas Anti Perspirants Or Body Deoderants Apparel Azo Dyes Blackboards Bleaching Agents Bookbinding Brushes Buckles Buoys Ceilings Cements Ceramics Chemical Igniters Clay Wares Coating Compositions Coils Conductors Or Conductive Bodies Characterised By The Conductive Materials Cooling Circuit Water Decorating Textiles Depilatories Discharge Lamps Drinking water Electric Hearing Aids Electric Switches Electrically Stimulated Smoking Devices Electrodes Embroidering And Tufting Emergency Protective Devices Erasers Essential Oils Or Perfumes Explosives Eye Makeup Products Face Mask Cosmetics Fencing Fire Fighting Gels Fixed Capacitors And Their Manufacture Food Preservation Footwear Glass Coatings Glass Fibres Headwear Herbicides And Algicides Hybrid Capacitors Inks Inorganic Fibres Insecticides Jewellery Leather Tanning Life Buoys Line Transmission Systems Lip Care Products Lip Makeup Products Magnets Manicure Pedicure Manufacture Preparation Of Tobacco Products Molluscicides Multicolour Dyeing Nanotechnology Nematocides Nitrogenous Fertilisers Paper Paper Making Machines Perfumes Within Detergents And Soaps Pest Repellants Phosphatic Fertilisers Pigment Pastes Plant Growth Regulators Power Cables Printing Machines Or Presses Processing Meats Purses Luggage Hand Bags Radio Transmission Systems Relays Ropes Silica Glass Slide Fasteners Sludge Treatment Soap Detergents Surface Finishing Of Leather Tents Or Canopies Tobacco Product Cases Tobacco Smoke Filters Touch Fasteners Transfer Printing Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0189994	4-(4-benzylphenyl)-1,3-thiazol-2-amine CAS68729-05-5	C₁₆H₁₄N₂S monoisotopic mass266.088 Average mass266.400	Airplanes And Helicopters Amplifiers Anchoring Equipment Antennas Auxiliary Devices Electric Switches Emergency Protective Devices Marine Propulsion Or Steering Radio Transmission Systems Relays Television Systems Toys Video Games
CED0190606	1-(3-Methylbutyl)-4-[[1-(3-methylbutyl)-4(1H)-quinolylidene]methyl]quinolinium iodide CASNot Available	C₂₉H₃₅N₂ monoisotopic mass411.280 Average mass538.517	Acaricides Airplanes And Helicopters Amplifiers Antennas Anti Perspirants Or Body Deoderants Apparel Blackboards Bleaching Agents Bookmarkers Books Cements Ceramics Coating Compositions Combination Pens Conductors Or Conductive Bodies Characterised By The Conductive Materials Contact Lens Cases Cooling Circuit Water Electrodes Embossing Machines Eye Makeup Products Fixed Capacitors And Their Manufacture Food Preservation Footwear Glass Coatings Glass Fibres Herbicides And Algicides Hybrid Capacitors Inks Insecticides Ladders Light Than Air Aircraft Lip Care Products Lip Makeup Products Nanotechnology Nematocides Paper Pens Perfumes Within Detergents And Soaps Pest Repellants Phosphatic Fertilisers Pigment Pastes Plant Growth Regulators Printing Machines Or Presses Silica Free Oxide Glass Silica Glass Sludge Treatment Soap Detergents Tobacco Smoke Filters Water, Wastewater, & Sewage Treatment Yarns Or Threads
CED0190792	6-(Dihydroxy-isobutyl)-thymine CASNot Available	C₉H₁₄N₂O₄ monoisotopic mass214.095 Average massNot Available	Amplifiers Antennas Explosives Nanotechnology Water, Wastewater, & Sewage Treatment
CED0190973	[3-[[5-(dimethylamino)naphthalen-1-yl]sulfonylamino]phenyl]boronic acid CAS75806-94-9	C₁₈H₁₉BN₂O₄S monoisotopic mass370.116 Average mass370.200	Amplifiers Ceramics Conductors Or Conductive Bodies Characterised By The Conductive Materials Electric Switches Electrodes Inks Manufacture Of Iron Or Steel Microphones Nanotechnology Radio Transmission Systems Silica Glass Television Systems Video Games Water, Wastewater, & Sewage Treatment
CED0190978	[3-(3'-methoxyspiro[adamantane-2,4'-dioxetane]-3'-yl)phenyl] dihydrogen phosphate CASNot Available	C₁₈H₂₃O₇P monoisotopic mass382.118 Average mass382.300	Amplifiers Antennas Electrodes Embroidering And Tufting Food Preservation Footwear Hybrid Capacitors Multicolour Dyeing Nanotechnology Silica Glass
CED0191015	9-[(4-acetyl-3-hydroxy-2-propylphenoxy)methyl]-3-(2h-tetrazol-5-yl)pyrido[1,2-a]pyrimidin-4-one CAS108427-72-1	C₂₁H₂₀N₆O₄ monoisotopic mass420.155 Average mass420.400	Amplifiers Antennas Anti Perspirants Or Body Deoderants Apparel Conductors Or Conductive Bodies Characterised By The Conductive Materials Electric Switches Electrodes Nanotechnology Paper Soap Detergents Water, Wastewater, & Sewage Treatment
CED0191112	2,3,4,5-Tetrachloro-o-quinone CAS2435-53-2	C₆Cl₄O₂ monoisotopic mass243.865 Average mass245.860	Amplifiers Anti Perspirants Or Body Deoderants Bleaching Agents Conductors Or Conductive Bodies Characterised By The Conductive Materials Decorating Textiles Electrodes Food Preservation Herbicides And Algicides Hybrid Capacitors Inks Manufacture Preparation Of Tobacco Products Nanotechnology Paper Perfumes Within Detergents And Soaps Pigment Pastes Water, Wastewater, & Sewage Treatment
CED0191282	2-amino-10h-acridin-9-one CAS27918-14-5	C₁₃H₁₀N₂O monoisotopic mass210.079 Average mass210.230	Amplifiers Apparel Electrodes Eye Makeup Products Hybrid Capacitors Inks Line Transmission Systems Manufacture Preparation Of Tobacco Products Nanotechnology Nitrogenous Fertilisers Radio Transmission Systems Television Systems Toys