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Chemical Compounds and CAS Registry Numbers - XML
CAS Registry Numbers are unique identifiers assigned by the Chemical Abstracts Service (CAS) of the American Chemical Society (ACS) to chemical substances. In operation since 1957, the registry now contains over 290 million substances. This dataset includes common chemicals such as water, ethanol, and acetone, along with their CAS Registry Numbers, molecular formulas, and uses. CAS numbers are internationally recognized and widely used by regulatory agencies, research institutions, and industries worldwide.
chemistry
CAS Registry Number
chemical substances
chemical database
molecular formula
organic compounds
inorganic compounds
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<items>
<item>
<code>001</code>
<slug>water</slug>
<name>Water</name>
<description>The most fundamental compound essential for life and the most common solvent.</description>
<casNumber>7732-18-5</casNumber>
<category>inorganic</category>
<molecularFormula>H2O</molecularFormula>
<synonyms>["Dihydrogen monoxide","Oxidane","H2O"]</synonyms>
<uses>["Solvent","Drinking","Coolant","Industrial raw material","Agricultural irrigation"]</uses>
</item>
<item>
<code>002</code>
<slug>ethanol</slug>
<name>Ethanol</name>
<description>The most common alcohol, widely used as a beverage, fuel, and solvent.</description>
<casNumber>64-17-5</casNumber>
<category>organic</category>
<molecularFormula>C2H6O</molecularFormula>
<synonyms>["Ethyl alcohol","Grain alcohol","Methylcarbinol"]</synonyms>
<uses>["Beverage","Disinfectant","Fuel","Solvent","Cosmetic ingredient"]</uses>
</item>
<item>
<code>003</code>
<slug>acetone</slug>
<name>Acetone</name>
<description>The simplest ketone, widely used as an organic solvent in laboratories and industry.</description>
<casNumber>67-64-1</casNumber>
<category>organic</category>
<molecularFormula>C3H6O</molecularFormula>
<synonyms>["Propanone","Dimethyl ketone","2-Propanone"]</synonyms>
<uses>["Organic solvent","Nail polish remover","Industrial raw material","Cleaning agent","Adhesive ingredient"]</uses>
</item>
<item>
<code>004</code>
<slug>benzene</slug>
<name>Benzene</name>
<description>The most fundamental aromatic hydrocarbon and an important raw material in the chemical industry.</description>
<casNumber>71-43-2</casNumber>
<category>organic</category>
<molecularFormula>C6H6</molecularFormula>
<synonyms>["Benzol","Cyclohexatriene","Phenyl hydride"]</synonyms>
<uses>["Chemical industry raw material","Styrene production","Phenol production","Synthetic fiber precursor"]</uses>
</item>
<item>
<code>005</code>
<slug>methanol</slug>
<name>Methanol</name>
<description>The simplest alcohol, used as a fuel and solvent.</description>
<casNumber>67-56-1</casNumber>
<category>organic</category>
<molecularFormula>CH4O</molecularFormula>
<synonyms>["Methyl alcohol","Wood alcohol","Carbinol"]</synonyms>
<uses>["Fuel","Solvent","Chemical raw material","Biodiesel feedstock","Antifreeze"]</uses>
</item>
<item>
<code>006</code>
<slug>formaldehyde</slug>
<name>Formaldehyde</name>
<description>The simplest aldehyde, used in resin manufacturing and disinfection.</description>
<casNumber>50-00-0</casNumber>
<category>organic</category>
<molecularFormula>CH2O</molecularFormula>
<synonyms>["Methanal","Oxymethylene","Formalin (aqueous solution)"]</synonyms>
<uses>["Synthetic resin raw material","Adhesive","Disinfectant","Preservative","Textile finishing agent"]</uses>
</item>
<item>
<code>007</code>
<slug>sulfuric-acid</slug>
<name>Sulfuric Acid</name>
<description>The most important industrial chemical, forming the basis of many chemical processes.</description>
<casNumber>7664-93-9</casNumber>
<category>inorganic</category>
<molecularFormula>H2SO4</molecularFormula>
<synonyms>["Oil of vitriol","Dihydrogen sulfate","H2SO4"]</synonyms>
<uses>["Fertilizer production","Chemical fibers","Dyes","Petroleum refining","Battery electrolyte"]</uses>
</item>
<item>
<code>008</code>
<slug>sodium-chloride</slug>
<name>Sodium Chloride</name>
<description>The most common salt, used as a food seasoning and important raw material in the chemical industry.</description>
<casNumber>7647-14-5</casNumber>
<category>inorganic</category>
<molecularFormula>NaCl</molecularFormula>
<synonyms>["Table salt","Common salt","Halite","Rock salt","NaCl"]</synonyms>
<uses>["Food seasoning","Chemical raw material","De-icing agent","Preservative","Water treatment"]</uses>
</item>
<item>
<code>009</code>
<slug>sodium-hydroxide</slug>
<name>Sodium Hydroxide</name>
<description>An important industrial chemical with strong basicity.</description>
<casNumber>1310-73-2</casNumber>
<category>inorganic</category>
<molecularFormula>NaOH</molecularFormula>
<synonyms>["Caustic soda","Lye","Sodium hydrate","NaOH"]</synonyms>
<uses>["Soap manufacturing","Pulp and paper production","Petroleum refining","Chemical fibers","Wastewater treatment"]</uses>
</item>
<item>
<code>010</code>
<slug>argon</slug>
<name>Argon</name>
<description>The most abundant noble gas in the atmosphere, widely used as an inert gas.</description>
<casNumber>7440-37-1</casNumber>
<category>element</category>
<molecularFormula>Ar</molecularFormula>
<synonyms>["Argon gas","Ar"]</synonyms>
<uses>["Arc welding","Light bulb filling gas","Semiconductor manufacturing","Cryogenic experiments","Food packaging"]</uses>
</item>
<item>
<code>011</code>
<slug>hydrogen</slug>
<name>Hydrogen</name>
<description>The most abundant element in the universe, gaining attention as a clean energy source.</description>
<casNumber>1333-74-0</casNumber>
<category>element</category>
<molecularFormula>H2</molecularFormula>
<synonyms>["Hydrogen gas","H2","Dihydrogen"]</synonyms>
<uses>["Fuel cells","Petroleum refining","Ammonia production","Hydrogen welding","Balloons"]</uses>
</item>
<item>
<code>012</code>
<slug>oxygen</slug>
<name>Oxygen</name>
<description>An element essential for sustaining life and one of the most abundant elements in the atmosphere.</description>
<casNumber>7782-44-7</casNumber>
<category>element</category>
<molecularFormula>O2</molecularFormula>
<synonyms>["Oxygen gas","O2","Dioxygen"]</synonyms>
<uses>["Medical oxygen","Metallurgy","Water treatment","Space development","Combustion accelerator"]</uses>
</item>
<item>
<code>013</code>
<slug>nitrogen</slug>
<name>Nitrogen</name>
<description>The most abundant element in the atmosphere, widely used as an inert gas.</description>
<casNumber>7727-37-9</casNumber>
<category>element</category>
<molecularFormula>N2</molecularFormula>
<synonyms>["Nitrogen gas","N2","Dinitrogen"]</synonyms>
<uses>["Food packaging","Inert atmosphere","Ammonia production","Electronic component manufacturing","Cryopreservation"]</uses>
</item>
<item>
<code>014</code>
<slug>carbon-dioxide</slug>
<name>Carbon Dioxide</name>
<description>A greenhouse gas with wide applications in beverages, fire extinguishers, and more.</description>
<casNumber>124-38-9</casNumber>
<category>inorganic</category>
<molecularFormula>CO2</molecularFormula>
<synonyms>["Carbonic acid gas","CO2","Dry ice (solid)"]</synonyms>
<uses>["Carbonated beverages","Fire extinguishers","Refrigerant","Welding","Food packaging"]</uses>
</item>
<item>
<code>015</code>
<slug>carbon-monoxide</slug>
<name>Carbon Monoxide</name>
<description>A toxic gas that serves as an important raw material in the chemical industry.</description>
<casNumber>630-08-0</casNumber>
<category>inorganic</category>
<molecularFormula>CO</molecularFormula>
<synonyms>["CO","Carbonic oxide"]</synonyms>
<uses>["Synthesis gas feedstock","Methanol production","Organic synthesis","Metal refining"]</uses>
</item>
<item>
<code>016</code>
<slug>dichloromethane</slug>
<name>Dichloromethane</name>
<description>A volatile organic solvent widely used in laboratories and industry.</description>
<casNumber>75-09-2</casNumber>
<category>organic</category>
<molecularFormula>CH2Cl2</molecularFormula>
<synonyms>["Methylene chloride","Methylene dichloride","DCM"]</synonyms>
<uses>["Extraction solvent","Paint remover","Foam production","Degreasing"]</uses>
</item>
<item>
<code>017</code>
<slug>cyclohexane</slug>
<name>Cyclohexane</name>
<description>An important alicyclic hydrocarbon used as a raw material for nylon.</description>
<casNumber>110-82-7</casNumber>
<category>organic</category>
<molecularFormula>C6H12</molecularFormula>
<synonyms>["Hexamethylene","Hexanaphthene"]</synonyms>
<uses>["Nylon precursor","Organic solvent","Chemical intermediate","Adhesive"]</uses>
</item>
<item>
<code>018</code>
<slug>toluene</slug>
<name>Toluene</name>
<description>A benzene derivative widely used as a solvent and chemical raw material.</description>
<casNumber>108-88-3</casNumber>
<category>organic</category>
<molecularFormula>C7H8</molecularFormula>
<synonyms>["Methylbenzene","Phenylmethane","Toluol"]</synonyms>
<uses>["Organic solvent","Paints","Adhesives","TNT production","Pharmaceutical raw material"]</uses>
</item>
<item>
<code>019</code>
<slug>styrene</slug>
<name>Styrene</name>
<description>An important monomer used as a raw material for polystyrene.</description>
<casNumber>100-42-5</casNumber>
<category>organic</category>
<molecularFormula>C8H8</molecularFormula>
<synonyms>["Vinylbenzene","Phenylethylene","Ethenylbenzene"]</synonyms>
<uses>["Polystyrene precursor","ABS resin","Synthetic rubber","Plastic products"]</uses>
</item>
<item>
<code>020</code>
<slug>trichloroethylene</slug>
<name>Trichloroethylene</name>
<description>An organochlorine compound widely used as an industrial cleaning agent.</description>
<casNumber>79-01-6</casNumber>
<category>organic</category>
<molecularFormula>C2HCl3</molecularFormula>
<synonyms>["Trichloroethene","TCE","Acetylene trichloride"]</synonyms>
<uses>["Metal cleaning","Degreasing agent","Dry cleaning","Chemical intermediate"]</uses>
</item>
</items>