# Chlorine
## ๐ง Chlorine ยท 3D (three.js)
<iframe src="https://wikitube-elements.netlify.app/?el=Cl&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Chlorine"></iframe>
*Chlorine in the live three.js Elements explorer โ drag to orbit the atom, click any tile to compare, slide the temperature.* ยท [โถ open full](https://wikitube-elements.netlify.app/?el=Cl)
<!-- ELEMENTS_MICROSIM:END -->
!Chlorine plate.svg
*Plate 17 of 118 - animated Bohr shells, stylized per Madelung filling; engraving style per house Arcanity kit.*
## Microsim To Do
*Claimable rows, house pattern. Real Wikipedia articles only.*
- Water chlorination - disinfection and public health chemistry
- Chlorofluorocarbon - CFCs and stratospheric ozone depletion
- Polyvinyl chloride - PVC plastics and polymer synthesis
- Bleach - chlorine chemistry in textile and paper industries
- Chlorine_compounds_in_medicine - antiseptics and pharmaceutical uses
## Links (Wikipedia order)
<!-- injected from _registry/childlinks/Chlorine.json (2026-07-30T02:09:12Z) -->
`1,8-Dibromooctane` ยท `12-O-Tetradecanoylphorbol-13-acetate` ยท `2,3,7,8-Tetrachlorodibenzodioxin` ยท `2,4,5-Trichlorophenol` ยท `2-Chloroethyl_ethyl_sulfide` ยท `2-Ethoxycarbonyl-1-methylvinyl_cyclohexyl_methylphosphonate` ยท `2022_Aqaba_toxic_gas_leak` ยท `2nd_Chemical_Battalion_(United_States)` ยท `3,3,5-Trimethylcyclohexanol` ยท `3,3,5-Trimethylcyclohexyl_3-pyridyl_methylphosphonate` ยท `3-Quinuclidinyl_benzilate` ยท `3152_CT` ยท `4-686-293-01` ยท `4-Hydroxycoumarin` ยท `A-232` ยท `A-234_(nerve_agent)` ยท `A-242` ยท `A-262` ยท `Aaldert_Wapstra` ยท `Abrin` ยท `Abu_Bakr_al-Razi` ยท `Abundance_of_elements_in_Earth's_crust` ยท `Acetone_cyanohydrin` ยท `Acetonitrile` ยท `Acid` ยท `Acidity_regulator` ยท `Aconitine` ยท `Acrolein` ยท [[Actinium]] ยท `Acyl_chloride` ยท `Adamsite` ยท `Agency_for_Toxic_Substances_and_Disease_Registry` ยท `Alchemy` ยท `Aldicarb` ยท `Alkali` ยท `Alkali_metal` ยท `Alkaline_earth_metal` ยท `Alkaloid` ยท `Alkene` ยท `Alkyne` ยท `Allicin` ยท `Allyl_alcohol` ยท `Allyl_chloride` ยท `Allyl_isothiocyanate` ยท `Alum` ยท [[Aluminium]] ยท `Aluminium_chloride` ยท `Aluminium_phosphide` ยท [[Americium]] ยท `Amino_acid` ยท `Ammonia` ยท `Ammonium_chloride` ยท `Ammonium_persulfate` ยท `Anatomical_theatre` ยท `Anatoxin-a` ยท `Ancient_Greek` ยท `Anniston_Army_Depot` ยท `Anniston_Chemical_Activity` ยท `Anode` ยท `Anticaking_agent` ยท `Antillatoxin` ยท [[Antimony]] ยท `Antimony_pentachloride` ยท `Antimony_pentafluoride` ยท `Antimony_potassium_tartrate` ยท `Antimony_trichloride` ยท `Antioxidant` ยท `Antiseptic` ยท `Apomorphine` ยท `Aqua_regia` ยท [[Argon]] ยท [[Arsenic]] ยท `Arsenic_pentafluoride` ยท `Arsenic_trichloride` ยท `Arsenic_trioxide` ยท `Arsenical` ยท `Arsine` ยท `Asbestos` ยท [[Astatine]] ยท `Atomic_electron_transition` ยท `Atomic_number` ยท `Atomic_radius` ยท `Austria` ยท `Azeotrope` ยท `Azide` ยท `Azodicarbonamide` ยท `BLU-80/B_Bigeye_bomb` ยท `Bacteria` ยท [[Barium]] ยท `Barium_chloride_fluoride` ยท `Barium_perchlorate` ยท `Barrel_bomb` ยท `Base_(chemistry)` ยท `Batrachotoxin` ยท `Benactyzine` ยท `Benperidol` ยท `Benzoyl_chloride` ยท `Benzoyl_peroxide` ยท `Benzyl_bromide` ยท `Benzyl_chloride` ยท `Benzyl_iodide` ยท [[Berkelium]] ยท [[Beryllium]] ยท [[Beta_decay]] ยท `Bicyclic_phosphate` ยท `Bifluoride` ยท `Biocide` ยท `Bis(chloromethyl)_ether` ยท [[Bismuth]] ยท `Bismuth_chloride` ยท `Blackleg_(disease)` ยท `Bleach` ยท `Blister_agent` ยท `Block_(periodic_table)` ยท `Blood_agent` ยท `Blue_Grass_Army_Depot` ยท [[Bohrium]] ยท [[Boiling_point]] ยท [[Boron]] ยท `Boron_group` ยท `Boron_trichloride` ยท `Botulinum_toxin` ยท `Brevetoxin` ยท `Brine` ยท [[Bromine]] ยท `Bromoacetone` ยท `Bromobenzyl_cyanide` ยท `Bromomethyl_ethyl_ketone` ยท `Bufotenin` ยท `Bungarotoxin` ยท `Butane-1-thiol` ยท `Butyl_group` ยท `Butyrophenone` ยท `C01-A035` ยท `C01-A039` ยท `C01-A042` ยท `CAR-226,086` ยท `CAR-301,060` ยท `CAR-302,196` ยท `CAR-302,282` ยท `CAR-302,668` ยท `CAS_Registry_Number` ยท `CB_military_symbol` ยท `CNS_(chemical_weapon)` ยท `CR_gas` ยท `CS-27349` ยท `CS_gas` ยท `Cacodyl_cyanide` ยท `Cacodyl_oxide` ยท `Cadaverine` ยท [[Cadmium]] ยท `Cadmium_chloride` ยท `Cadmium_oxide` ยท [[Caesium]] ยท [[Calcium]] ยท `Calcium_chloride` ยท `Calcium_hydroxide` ยท `Calcium_hypochlorite` ยท [[Californium]] ยท `Canbisol` ยท `Cantharidin` ยท `Carbamate` ยท [[Carbon]] ยท `Carbon_group` ยท `Carbon_monoxide` ยท `Carbon_tetrachloride` ยท `Carfentanil` ยท `Carl_Wilhelm_Scheele` ยท `CastnerโKellner_process` ยท `Catalysis` ยท `Catgut` ยท `Cerebral_edema` ยท [[Cerium]] ยท `Chalcogen` ยท `Chalcone` ยท `Charles_Tennant` ยท `Chemical_Agent_Identification_Set` ยท `Chemical_Corps` ยท `Chemical_Society_Reviews` ยท [[Chemical_element]] ยท `Chemical_equation` ยท `Chemical_mortar_battalion` ยท `Chemical_vapor_deposition` ยท `Chemical_warfare` ยท `Chemical_weapon` ยท `Chemical_weapons_in_World_War_I` ยท `Chinese_VX` ยท `Chloral_cyanohydrin` ยท `Chloralkali_process` ยท `Chloramination` ยท `Chloramines` ยท `Chlorate` ยท `Chloric_acid` ยท `Chloride` ยท `Chlorin` ยท `Chlorine-36` ยท `Chlorine-37` ยท `Chlorine_(disambiguation)` ยท `Chlorine_azide` ยท `Chlorine_bombings_in_Iraq` ยท `Chlorine_cycle` ยท `Chlorine_dioxide` ยท `Chlorine_fluoride` ยท `Chlorine_fluorosulfate` ยท `Chlorine_gas_poisoning` ยท `Chlorine_monofluoride` ยท `Chlorine_monoxide` ยท `Chlorine_nitrate` ยท `Chlorine_oxide` ยท `Chlorine_pentafluoride` ยท `Chlorine_perchlorate` ยท `Chlorine_peroxide` ยท `Chlorine_production` ยท `Chlorine_tetroxide` ยท `Chlorine_trifluoride` ยท `Chlorite` ยท `Chlormethine` ยท `Chloroacetone` ยท `Chloroacetophenone_oxime` ยท `Chlorobenzene` ยท `Chlorocyclopropane` ยท `Chlorofluorocarbon` ยท `Chloroform` ยท `Chloromethane` ยท `Chlorophenylsilatrane` ยท `Chloropicrin` ยท `Chlorosarin` ยท `Chlorosoman` ยท `Chlorosulfuric_acid` ยท `Chlorosyl_fluoride` ยท `Chlorous_acid` ยท `Chlorpromazine` ยท `Chloryl_fluoride` ยท `Choline` ยท [[Chromium]] ยท `Ciguatoxin` ยท `Clathrate_hydrate` ยท `Claude_Louis_Berthollet` ยท `Cloflubicyne` ยท [[Cobalt]] ยท `Commission_on_Isotopic_Abundances_and_Atomic_Weights` ยท `Concentration` ยท `Coniine` ยท [[Copernicium]] ยท [[Copper]] ยท `Cosmic_ray` ยท `Cosmogenic_nuclide` ยท `Covalent_radius` ยท `Critical_point_(thermodynamics)` ยท `Croton_oil` ยท `Crotonaldehyde` ยท `Crotylsarin` ยท [[Crystal_structure]] ยท [[Curium]] ยท `Cyanate` ยท `Cyanogen` ยท `Cyanogen_bromide` ยท `Cyanogen_chloride` ยท `Cyclohexanol` ยท `Cyclopiazonic_acid` ยท `Cyclosarin` ยท `Cysteine` ยท `Cystine` ยท `DDT` ยท `DRC-5593` ยท `Dakin's_solution` ยท [[Darmstadtium]] ยท `Deacon_process` ยท `Dead_Sea` ยท [[Decay_product]] ยท [[Density]] ยท `Depleted_uranium` ยท `Deseret_Chemical_Depot` ยท `Desflurane` ยท `Diargon` ยท `Diatomic_carbon` ยท `Diatomic_molecule` ยท `Diborane` ยท `Dibutylchloromethyltin_chloride` ยท `Dichlorine_heptoxide` ยท `Dichlorine_hexoxide` ยท `Dichlorine_monoxide` ยท `Dichlorine_pentoxide` ยท `Dichlorine_trioxide` ยท `Dichlorobenzene` ยท `Dicyclohexyl_phosphorofluoridate` ยท `Diglycolic_acid` ยท `Diisopropyl_fluorophosphate` ยท `Diisopropyl_methylphosphonate` ยท `Dilithium` ยท `Dimefox` ยท `Dimethyl(trifluoromethylthio)arsine` ยท `Dimethyl_acetylenedicarboxylate` ยท `Dimethyl_fumarate` ยท `Dimethyl_methylphosphonate` ยท `Dimethylamidophosphoric_dichloride` ยท `Dimethylamidophosphoric_dicyanide` ยท `Dimethylcarbamoyl_fluoride` ยท `Dimethylheptylpyran` ยท `Dimethylmercury` ยท `Dinitrogen_tetroxide` ยท `Diphenylchlorarsine` ยท `Diphenylcyanoarsine` ยท `Diphosgene` ยท `Diphosphorus` ยท `Dirubidium` ยท `Disinfectant` ยท `Disulfur` ยท `Disulfur_decafluoride` ยท `Ditran` ยท `Domoic_acid` ยท `Drinking_water` ยท [[Dubnium]] ยท `Duchy_of_Brabant` ยท `Dugway_sheep_incident` ยท [[Dysprosium]] ยท `EA-1356` ยท `EA-1763` ยท `EA-2012` ยท `EA-2054` ยท `EA-2098` ยท `EA-2192` ยท `EA-2613` ยท `EA-3148` ยท `EA-3167` ยท `EA-3443` ยท `EA-3580` ยท `EA-3834` ยท `EA-3887` ยท `EA-3966` ยท `EA-3990` ยท `EA-4056` ยท `EA-4352` ยท `EA-5488` ยท `E_number` ยท `Edgewood_Arsenal_human_experiments` ยท `Edgewood_Chemical_Activity` ยท `Edgewood_Chemical_Biological_Center` ยท [[Einsteinium]] ยท `Electrical_resistivity_and_conductivity` ยท `Electrolysis` ยท `Electron_affinity` ยท `Electron_capture` ยท `Electron_configuration` ยท `Electronegativity` ยท `Embalming` ยท `Enflurane` ยท `Enterotoxin_type_B` ยท `Enthalpy_of_fusion` ยท `Enthalpy_of_vaporization` ยท `Epibatidine` ยท `Epichlorohydrin` ยท [[Erbium]] ยท `Escherichia_coli` ยท `Ethane` ยท `Ethanol` ยท `Ethenone` ยท `Ethyl_bromoacetate` ยท `Ethyl_group` ยท `Ethyl_iodoacetate` ยท `Ethyldichloroarsine` ยท `Ethylphosphonoselenoic_dichloride` ยท `Ethylsarin` ยท `Etonitazene` ยท `Etorphine` ยท `Etoxadrol` ยท [[Europium]] ยท `Fatty_acid` ยท [[Fermium]] ยท `Flavonoid` ยท `Flavoring` ยท [[Flerovium]] ยท `Fluomine` ยท [[Fluorine]] ยท `Fluoroethyl_fluoroacetate` ยท `Fluorotabun` ยท `Fluphenazine` ยท `Foaming_agent` ยท `Food_additive` ยท `Food_coloring` ยท `Formaldoxime` ยท `Fox_News` ยท [[Francium]] ยท `Fritz_Haber` ยท `Fulminic_acid` ยท `GHS_hazard_pictograms` ยท `GHS_hazard_statements` ยท `GHS_precautionary_statements` ยท `GH_(nerve_agent)` ยท `GP_(nerve_agent)` ยท `GS_(nerve_agent)` ยท `GV_(nerve_agent)` ยท [[Gadolinium]] ยท [[Gallium]] ยท `Gas` ยท `Gas_mask` ยท `Gelsemine` ยท `Gerard_of_Cremona` ยท `Germ_theory_of_disease` ยท [[Germanium]] ยท `Glazing_agent` ยท `Globally_Harmonized_System_of_Classification_and_Labelling_of_Chemicals` ยท `Glycolonitrile` ยท [[Gold]] ยท `Goldbeater's_skin` ยท `Grayanotoxin` ยท `Great_Salt_Lake` ยท `Green_Cross_(chemical_warfare)` ยท `Group_(periodic_table)` ยท `Group_10_element` ยท `Group_11_element` ยท `Group_12_element` ยท `Group_3_element` ยท `Group_4_element` ยท `Group_5_element` ยท `Group_6_element` ยท `Group_7_element` ยท `Group_8_element` ยท `Group_9_element` ยท `Guanitoxin` ยท `HN1_(nitrogen_mustard)` ยท `HN3_(nitrogen_mustard)` ยท [[Hafnium]] ยท [[Half-life]] ยท `Haloform_reaction` ยท `Halogen` ยท `Halothane` ยท [[Hassium]] ยท `Hawthorne_Army_Depot` ยท `Health_Hazard_Evaluation_Program` ยท `Heavy_water` ยท [[Helium]] ยท `Helium_dimer` ยท `Henry_Drysdale_Dakin` ยท `Hexachloropropene` ยท `Hexafluoroacetone` ยท `Hexamethylene_diisocyanate` ยท `Hexane-2,5-dione` ยท `Histrionicotoxins` ยท [[Holmium]] ยท `Hospital` ยท `Humphry_Davy` ยท `Hydrazine` ยท `Hydrocarbon` ยท `Hydrochloric_acid` ยท [[Hydrogen]] ยท `Hydrogen_bond` ยท `Hydrogen_chloride` ยท `Hydrogen_cyanide` ยท `Hydrogen_fluoride` ยท `Hydrogen_iodide` ยท `Hydrogen_sulfide` ยท `Hyperchloremia` ยท `Hypergolic_propellant` ยท `Hypernatremia` ยท `Hypochloremia` ยท `Hypochlorite` ยท `Hypochlorous_acid` ยท `Hypoventilation` ยท `IDPN_(chemical)` ยท `IG_Farben` ยท `IPTBO` ยท `Ibogaine` ยท `Ignaz_Semmelweis` ยท `Immune_system` ยท `Incapacitating_agent` ยท [[Indium]] ยท `Industrial_gas` ยท `Ingenol_mebutate` ยท `Insecticide` ยท `Institut_Franรงais_d'Archรฉologie_Orientale` ยท `Interhalogen` ยท [[Iodine]] ยท `Iodoacetone` ยท [[Ion]] ยท `Ion_exchange` ยท [[Ionization_energy]] ยท `Iraq` ยท [[Iridium]] ยท [[Iron]] ยท `Iron_pentacarbonyl` ยท `Isoflurane` ยท `Isopropyl_alcohol` ยท `Isotopes_of_chlorine` ยท `Jabir_ibn_Hayyan` ยท `Jan_Baptist_van_Helmont` ยท `JavelโAndrรฉ_Citroรซn_station` ยท `Johnston_Atoll_Chemical_Agent_Disposal_System` ยท `Joseph_Louis_Gay-Lussac` ยท `KB-16` ยท `Kelvin` ยท `KinnearโPerren_reaction` ยท `Kolokol-1` ยท [[Krypton]] ยท `LSD` ยท `Lactonitrile` ยท [[Lanthanum]] ยท `Latin_Quarter,_Paris` ยท `Latin_translations_of_the_12th_century` ยท `Latrine` ยท `Lattice_constant` ยท `Lattice_energy` ยท `Laundry` ยท [[Lawrencium]] ยท `Lazaretto` ยท [[Lead]] ยท `Leaving_group` ยท `Lewisite` ยท `Lewisite_2` ยท `Lewisite_3` ยท `Ligand` ยท `List_of_chemical_element_name_etymologies` ยท `List_of_chemical_warfare_agents` ยท `List_of_data_references_for_chemical_elements` ยท `Litharge` ยท [[Lithium]] ยท `Lithosphere` ยท [[Livermorium]] ยท `Lobeline` ยท [[Lutetium]] ยท `M104_155_mm_projectile` ยท `M110_155_mm_projectile` ยท `M121_155_mm_projectile` ยท `M125_bomblet` ยท `M134_bomblet` ยท `M138_bomblet` ยท `M139_bomblet` ยท `M1_chemical_mine` ยท `M23_chemical_mine` ยท `M2_mortar` ยท `M34_cluster_bomb` ยท `M360_105_mm_projectile` ยท `M426_8-inch_shell` ยท `M43_BZ_cluster_bomb` ยท `M44_generator_cluster` ยท `M47_bomb` ยท `M55_(rocket)` ยท `M60_105_mm_projectile` ยท `M687_155_mm_projectile` ยท `MC-1_bomb` ยท `MOPP_(protective_gear)` ยท `MPTP` ยท `MSPI_(nerve_agent)` ยท `Mace_(spray)` ยท `Magnanery` ยท [[Magnesium]] ยท `Magnetic_susceptibility` ยท `Magnetism` ยท `Maitotoxin` ยท `Malodorant` ยท [[Manganese]] ยท `Manganese_dioxide` ยท `Mary_Elvira_Weeks` ยท [[Meitnerium]] ยท `Melting_point` ยท [[Mendelevium]] ยท `Mercury(II)_chloride` ยท `Mercury(II)_oxide` ยท [[Mercury_(element)]] ยท `Methane` ยท `Methanesulfonyl_fluoride` ยท `Methaqualone` ยท `Methyl_cyanoacrylate` ยท `Methyl_cyanoformate` ยท `Methyl_fluoroacetate` ยท `Methyl_group` ยท `Methyl_isocyanate` ยท `Methyl_vinyl_ketone` ยท `Methyldichloroarsine` ยท `Methyldichlorophosphine` ยท `Methylnitronitrosoguanidine` ยท `Methylphosphonyl_dichloride` ยท `Methylphosphonyl_difluoride` ยท `Metre_per_second` ยท `Mevinphos` ยท `Michael_Faraday` ยท `Microorganism` ยท `Mineral_(nutrient)` ยท `Miotine` ยท `Modeccin` ยท `Molar_heat_capacity` ยท `Molar_ionization_energies_of_the_elements` ยท [[Molybdenum]] ยท `Molybdenum(III)_bromide` ยท `Molybdenum(V)_chloride` ยท `Monochloramine` ยท `Mortar_(weapon)` ยท [[Moscovium]] ยท `Mucous_membrane` ยท `Muon_capture` ยท `Mustard_gas` ยท `N,N-Diisopropylaminoethanol` ยท `N-Ethyl-3-piperidyl_benzilate` ยท `N-Methyl-3-piperidyl_benzilate` ยท `N-Methylmorpholine` ยท `NFPA_704` ยท `Napalm` ยท `National_Institute_for_Occupational_Safety_and_Health` ยท `Natural_abundance` ยท [[Neodymium]] ยท [[Neon]] ยท `Neopentylene_fluorophosphate` ยท [[Neptunium]] ยท `Nerve_agent` ยท `Nettle_agent` ยท `Neurotoxin` ยท `Neutron_activation` ยท `Neutrophil` ยท `Newport_Chemical_Depot` ยท [[Nickel]] ยท `Nickel(II)_chloride` ยท `Nickel_tetracarbonyl` ยท `Nicotine` ยท [[Nihonium]] ยท [[Niobium]] ยท `Nitric_acid` ยท `Nitric_oxide` ยท `Nitrile` ยท [[Nitrogen]] ยท `Nitrogen_dioxide` ยท `Nitrogen_mustard` ยท `Nitrogen_trichloride` ยท `Nitromethane` ยท `Nitrosyl_chloride` ยท [[Nobelium]] ยท [[Noble_gas]] ยท `Noble_metal` ยท `Norcantharidin` ยท `Norman_Greenwood` ยท [[Nuclear_magnetic_resonance]] ยท `Nucleophile` ยท `O-Dianisidine` ยท `OPA_mixture` ยท `OPCW-UN_Joint_Investigative_Mechanism` ยท `Occupational_Safety_and_Health_Administration` ยท `Octamethylene-bis(5-dimethylcarbamoxyisoquinolinium_bromide)` ยท `Offal` ยท [[Oganesson]] ยท `Operation_CHASE` ยท `Operation_Davy_Jones'_Locker` ยท `Operation_Geranium` ยท `Operation_LAC` ยท `Operation_Ranch_Hand` ยท `Operation_Red_Hat` ยท `Operation_Steel_Box` ยท `Operation_Top_Hat` ยท `Organic_chemistry` ยท `Orthorhombic_crystal_system` ยท [[Osmium]] ยท `Osmium_tetroxide` ยท `Overpotential` ยท `Oxidation_state` ยท `Oxide` ยท `Oxidizing_agent` ยท `Oxotremorine` ยท [[Oxygen]] ยท `Oxygen-burning_process` ยท `Ozone_depletion` ยท `PAVA_spray` ยท `PH` ยท `Packaging_gas` ยท [[Palladium]] ยท `Palytoxin` ยท `Paraoxon` ยท `Paul_Kraus_(Arabist)` ยท `Pearson_symbol` ยท `Pentazocine` ยท `People_sniffer` ยท `Pepper_spray` ยท `Perchlorate` ยท `Perchloric_acid` ยท `Perchloryl_fluoride` ยท `Perfluoroisobutene` ยท `Period_(periodic_table)` ยท `Period_1_element` ยท `Period_2_element` ยท `Period_3_element` ยท `Period_4_element` ยท `Period_5_element` ยท `Period_6_element` ยท `Period_7_element` ยท `Periodic_table` ยท `Peritoneum` ยท `Permissible_exposure_limit` ยท `Persistent_organic_pollutant` ยท `Peshmerga` ยท `Pethidine` ยท `Phase_(matter)` ยท `Phenacyl_bromide` ยท `Phenacyl_chloride` ยท `Phencyclidine` ยท `Phenol` ยท `Phenylcarbylamine_chloride` ยท `Phenyldichloroarsine` ยท `Phorbol_esters` ยท `Phosgene` ยท `Phosgene_oxime` ยท `Phosphine` ยท `Phosphoric_acid` ยท [[Phosphorus]] ยท `Phosphorus_pentachloride` ยท `Phosphorus_trichloride` ยท `Phosphorus_trifluoride` ยท `Phosphoryl_chloride` ยท `Phytochemistry_(journal)` ยท `Picometre` ยท `Picrotoxin` ยท `Pinacolone` ยท `Pinacolyl_alcohol` ยท `Pine_Bluff_Chemical_Activity` ยท `Placard` ยท [[Platinum]] ยท [[Plutonium]] ยท `Plutonium_compounds` ยท `Pnictogen` ยท [[Polonium]] ยท `Poly(methyl_methacrylate)` ยท `Polybutene` ยท `Polychlorinated_dibenzodioxins` ยท `Polymer` ยท `Polymer_degradation` ยท `Polyvinyl_chloride` ยท [[Potassium]] ยท `Potassium_borohydride` ยท `Potassium_bromate` ยท `Potassium_fluoride` ยท `Potassium_persulfate` ยท [[Praseodymium]] ยท `Preservative` ยท `Primordial_nuclide` ยท `Prison` ยท `Procarbazine` ยท `Program_Executive_Office,_Assembled_Chemical_Weapons_Alternatives` ยท `Project_112` ยท `Project_SHAD` ยท [[Promethium]] ยท [[Protactinium]] ยท [[Proton]] ยท `Pseudo-Geber` ยท `Pseudohalogen` ยท `Psilocybin` ยท `Pueblo_Chemical_Depot` ยท `Pulmonary_agent` ยท `Putrefaction` ยท `Putrescine` ยท `Pyrolusite` ยท `QL_(chemical)` ยท `QL_sulfide` ยท `Quaternary_ammonium_cation` ยท `R-16661` ยท `R1317` ยท [[Radioactive_decay]] ยท [[Radium]] ยท [[Radon]] ยท `Reagent` ยท `Recommended_exposure_limit` ยท `Reductive_dechlorination` ยท `Reflux` ยท `Regioselectivity` ยท `Remifentanil` ยท `Resiniferatoxin` ยท `Respiratory_acidosis` ยท [[Rhenium]] ยท [[Rhodium]] ยท `Ricin` ยท `Riot_control` ยท `Ro_3-0422` ยท `Robert_P._Multhauf` ยท [[Roentgenium]] ยท [[Rubidium]] ยท [[Ruthenium]] ยท [[Rutherfordium]] ยท `Ryanodine` ยท `Salcomine` ยท `Salt_(chemistry)` ยท [[Samarium]] ยท `Sarin` ยท `Saxitoxin` ยท [[Scandium]] ยท `Scandium_chloride` ยท [[Seaborgium]] ยท `Second_Battle_of_Ypres` ยท [[Selenium]] ยท `Selenium_dioxide` ยท `Selenophos` ยท `Selenoyl_fluoride` ยท `Semipermeable_membrane` ยท `Sesquimustard` ยท `Sevoflurane` ยท `Sewerage` ยท `Shiga_toxin` ยท [[Silicon]] ยท `Silicon-burning_process` ยท `Silicon_tetrachloride` ยท [[Silver]] ยท `Silver_chloride` ยท `Skatole` ยท `Sociรฉtรฉ_d'encouragement_pour_l'industrie_nationale` ยท [[Sodium]] ยท `Sodium_amalgam` ยท `Sodium_chlorate` ยท `Sodium_chloride` ยท `Sodium_chlorite` ยท `Sodium_hydroxide` ยท `Sodium_hypochlorite` ยท `Sodium_perchlorate` ยท `Solvolysis` ยท `Soman` ยท `Spallation` ยท `Specific_heat_capacity` ยท `Spectral_line` ยท `Speed_of_sound` ยท `Stable` ยท `Stainless_steel` ยท `Standard_atomic_weight` ยท `Standard_electrode_potential` ยท `Standard_temperature_and_pressure` ยท `Steroid` ยท `Steven_Johnson_(author)` ยท `Stibine` ยท `Stress_corrosion_cracking` ยท [[Strontium]] ยท `Strychnine` ยท `Sugar_substitute` ยท [[Sulfur]] ยท `Sulfur_dioxide` ยท `Sulfuric_acid` ยท `Sulfuryl_fluoride` ยท `Swimming_pool` ยท `Swimming_pool_sanitation` ยท `Syria` ยท `Syrian_Air_Force` ยท `T-1123` ยท `T-1152` ยท `T-1194` ยท `T-2_mycotoxin` ยท `TBPO` ยท `TBPS` ยท `TL-1238` ยท `TL-301` ยท `TL-599` ยท `TPz_Fuchs` ยท `Tabun_(nerve_agent)` ยท `Tank_car` ยท [[Tantalum]] ยท `Tear_gas` ยท [[Technetium]] ยท [[Tellurium]] ยท [[Tennessine]] ยท [[Terbium]] ยท `Terpene` ยท `Tetrachlorodinitroethane` ยท `Tetraethyllead` ยท `Tetramethylenedisulfotetramine` ยท `Tetranitromethane` ยท `Tetrodotoxin` ยท [[Thallium]] ยท `The_Washington_Post` ยท `Thickening_agent` ยท `Thioacetone` ยท `Thiocyanate` ยท `Thiodiglycol` ยท `Thionyl_chloride` ยท `Thiophosgene` ยท `Thiosarin` ยท [[Thorium]] ยท [[Thulium]] ยท `Timeline_of_chemical_element_discoveries` ยท [[Tin]] ยท `Tin(IV)_chloride` ยท [[Titanium]] ยท `Titanium_tetrachloride` ยท `Tooele_Chemical_Agent_Disposal_Facility` ยท `Trace_radioisotope` ยท `Tremorine` ยท `Trench` ยท `Trichlorobenzene` ยท `Trichloroethylene` ยท `Trichloronitrosomethane` ยท `Triethyl_phosphite` ยท `Trifluoroacetyl_chloride` ยท `Trifluoronitrosomethane` ยท `Triiodide` ยท `Trimethyl_phosphite` ยท `Trimethylolpropane_phosphite` ยท `Triple_point` ยท [[Tungsten]] ยท `UN_number` ยท `Umatilla_Chemical_Depot` ยท `Unethical_human_experimentation_in_the_United_States` ยท `United_States_Army_Chemical_Materials_Activity` ยท `United_States_Army_Medical_Research_Institute_of_Chemical_Defense` ยท `United_States_chemical_weapons_program` ยท `Upper_atmosphere` ยท [[Uranium]] ยท `Uranium_hexafluoride` ยท `Uranium_oxide` ยท `Uranium_tetrachloride` ยท `Uranium_trioxide` ยท `Urea` ยท `V-sub_x` ยท `VE_(nerve_agent)` ยท `VG_(nerve_agent)` ยท `VM_(nerve_agent)` ยท `VR-56_(nerve_agent)` ยท `VR_(nerve_agent)` ยท `VS_(nerve_agent)` ยท `VT_(nerve_agent)` ยท `VX_(nerve_agent)` ยท `Valence_electron` ยท `Van_der_Waals_force` ยท `Van_der_Waals_radius` ยท [[Vanadium]] ยท `Vapor_pressure` ยท `Veratridine` ยท `Vienna_General_Hospital` ยท `Vinyl_chloride` ยท `Vitriol` ยท `Volkensin` ยท `Vomiting_agent` ยท `Vรขnฤtori-Neamศ` ยท `Water` ยท `Water_chlorination` ยท `Water_purification` ยท `Wax` ยท [[Wayback_Machine]] ยท `Weteye_bomb` ยท `World_War_I` ยท `XM736_8-inch_projectile` ยท [[Xenon]] ยท `Xenon_dichloride` ยท `Xylyl_bromide` ยท [[Ytterbium]] ยท [[Yttrium]] ยท [[Zinc]] ยท `Zinc_chloride` ยท [[Zirconium]] ยท `Zirconium_dioxide`
> **Official MAIN - Chemical element, Z = 17.** Part of the Elements Canon (one canonical page per element). Infobox grounded in [Wikipedia: List of chemical elements](https://en.wikipedia.org/wiki/List_of_chemical_elements), fetched 2026-07-08. Full article: [Wikipedia: Chlorine](https://en.wikipedia.org/wiki/Chlorine).
<!-- ELEMENTS_MICROSIM:BEGIN (auto-managed block - edits inside will be overwritten) -->
## Key facts (infobox)
| | |
|---|---|
| Symbol - Z | Cl - 17 |
| Group - Period - Block | 17 - 3 - p-block |
| Atomic weight (Da) | 35.45 |
| Density (g/cm3) | 0.0032 |
| Melting - Boiling (K) | 171.6 - 239.11 |
| Electronegativity (Pauling) | 3.16 |
| Crustal abundance (mg/kg) | 145 |
| Origin | primordial |
| Phase (STP) | gas |
| Name origin | Greek chloros, 'greenish yellow' |
*Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).*
## Story
Chlorine was first discovered in 1774 by Swedish chemist Carl Wilhelm Scheele as a product of reacting hydrochloric acid with manganese dioxide, though he initially mistook it for a different compound. The element's name, from Greek *chloros* ("greenish-yellow"), reflects its distinctive color and state as a highly toxic, acrid gas. For decades, chlorine remained a laboratory curiosity until the 19th-century Industrial Revolution, when chemists learned to synthesize it at scale for bleaching and disinfection.
Chlorine is a diatomic gas (Clโ) that is highly corrosive and poisonous, causing respiratory damage even in low concentrations [model-prior - verify]. Its intense reactivity and ability to oxidize organic compounds made it invaluable as a bleach for textiles and paperโa role that made chlorine industry pioneers wealthy and powerful. Chlorine's most transformative application came in water disinfection: adding small quantities of chlorine to drinking water kills bacteria and viruses, preventing cholera, typhoid, and dysentery that once killed millions [model-prior - verify]. This public health innovation is credited with saving more lives than any single medical intervention [model-prior - verify]. Chlorine appears in countless synthetic compounds, from plastics (PVC) to pesticides to pharmaceuticals. The element also participates in Earth's stratospheric ozone chemistry, where chlorine from CFCs (chlorofluorocarbons) catalyzes ozone destruction, a discovery that won Crutzen, Molina, and Rowland the Nobel Prize in 1995.
In this corpus, chlorine anchors the **public health and industrial chemistry narrative**, illustrating how elemental chemistry enabled sanitation and transformed human mortality patterns while also introducing environmental hazards requiring collective action.
## Corpus connections
- R.E.A.C.T.I.O.N. - the Chemistry hub
- Centers of Excellence Portal
- [[Technetium|Technetium - the element made before found]] - the canon's patron - and Technitium, the School
- External: [Water_disinfection - en.wikipedia.org](https://en.wikipedia.org/wiki/Water_chlorination) for public health
- External: [Chlorofluorocarbon - en.wikipedia.org](https://en.wikipedia.org/wiki/Chlorofluorocarbon) and ozone depletion
- SOLAR SYSTEM MINING SURVEYS - chlorine isotope abundances in meteorites
## Vocational-Technical Semiotics
The element speaks the canon's shared signs: the periodic table cell (Cl, group 17, period 3), isotope notation, and hazard pictograms ghs where handling demands it.
## Sources
Infobox: [en.wikipedia.org/wiki/List_of_chemical_elements](https://en.wikipedia.org/wiki/List_of_chemical_elements) (fetched 2026-07-08); etymology per the same table's notes. Story sources to be added at enrichment.
## Navigation
- Canon: Elements Canon index - neighbors by Z: [[Sulfur|Sulfur (16)]] - [[Argon|Argon (18)]]
- R.E.A.C.T.I.O.N. - Centers of Excellence
## Wikipedia : Wikitube
**Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Chlorine) : [Wikitube](https://en.wikitube.io/wiki/Chlorine)
## Previous hub tags
Tree parents: [[Helium]] ยท [[Hydrogen]] ยท [[Oxygen]].
Legacy hubs: none.
---
*Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*