These include deionized water, detergent solutions and rinse solvents such as acetone, isopropanol or ethanol. The chemical compound isopropyl nitrite (or 2-propyl nitrite) is an alkyl nitrite made from isopropanol. Typical fuel is denatured alcohol, methanol, or isopropanol. Methanol, isopropanol, or other alcohol vapor saturates the chamber. Levan also is insoluble in many organic solvents such as methanol, ethanol, isopropanol, etc. Isopropyl alcohol is also known as 2-propanol, "sec"-propyl alcohol, IPA, or isopropanol. The nucleic acids can then be precipitated from the aqueous solution using ethanol or isopropanol. Methanol, and to a far lesser extent isopropanol, is poisonous. Most of a canister is filled solvents such as isopropanol (rubbing alcohol) and ethanol. It is prepared by treating titanium tetrachloride with isopropanol. Propene is also used to produce isopropanol (propan-2-ol), acrylonitrile, propylene oxide, and epichlorohydrin. Typical liquids include water, ethanol and isopropanol either alone or in combination. In these formulations, the antimicrobial activity arises from ethanol or isopropanol. This type of reaction is employed industrially to produce ethanol, isopropanol, and 2-butanol. After cessation of effervescence, the sodium ascorbate is precipitated by the addition of isopropanol.