Provided is a novel compound that is expected to be used as a solvent, a cleaning agent, a blowing agent, an intermediate for a functional material, and so forth, as well as a production method therefor and uses thereof As the novel compound, 1,2-dichoro-1-(2,2,2-trifluoroethoxy)ethylene is provided. This compound can be produced, for example, by allowing an addition reaction between 2,2,2-trifluoroethanol and trichloroethylene in the presence of a base.

An aqueous composition may include: (A) a fluoride ion supply source in an amount that gives a fluoride ion concentration of 0.05 to 30 mmol/L in the composition; (B) a cation supply source in an amount that gives a mole ratio of cations of 0.3 to 20 to the fluoride ions in the composition; and (C) 0.0001 to 10 mass % of one or more compounds selected from a C.sub.4-13 alkylphosphonic acid, a C.sub.4-13 alkylphosphonate ester, a C.sub.4-13 alkyl phosphate and a salt thereof, with respect to the total amount of the composition, wherein pH is in a range of from 2 to 6.

An aqueous composition may include: (A) a fluoride ion supply source in an amount that gives a fluoride ion concentration of 0.05 to 30 mmol/L in the composition; (B) a cation supply source in an amount that gives a mole ratio of cations of 0.3 to 20 to the fluoride ions in the composition; and (C) 0.0001 to 10 mass % of one or more compounds selected from a C.sub.4-13 alkylphosphonic acid, a C.sub.4-13 alkylphosphonate ester, a C.sub.4-13 alkyl phosphate and a salt thereof, with respect to the total amount of the composition, wherein pH is in a range of from 2 to 6.

The drain-unclogging straw is a chemical device. The drain-unclogging straw comprises a drain clearing device and a domestic DWV system. The domestic DWV system further comprises a drain. The drain contains biochemically-generated material that inhibits the flow of wastewater through the drain. The drain clearing device is a chemical device that is formed as a kit. The drain clearing device breaks the biochemically-generated material down into components that will flow through the drain. The drain clearing device comprises a straw and a chemical compound. The chemical compound is in a solid phase. The straw contains the chemical compound. The straw is placed directly in the drain. Once in the drain, the straw dissolves such that the chemical compound is released into the drain. The chemical compound chemically interacts with the biochemically-generated material such that the biochemically-generated material is broken down.

The drain-unclogging straw is a chemical device. The drain-unclogging straw comprises a drain clearing device and a domestic DWV system. The domestic DWV system further comprises a drain. The drain contains biochemically-generated material that inhibits the flow of wastewater through the drain. The drain clearing device is a chemical device that is formed as a kit. The drain clearing device breaks the biochemically-generated material down into components that will flow through the drain. The drain clearing device comprises a straw and a chemical compound. The chemical compound is in a solid phase. The straw contains the chemical compound. The straw is placed directly in the drain. Once in the drain, the straw dissolves such that the chemical compound is released into the drain. The chemical compound chemically interacts with the biochemically-generated material such that the biochemically-generated material is broken down.

This application relates to compositions comprising one or more partially fluorinated epoxides and/or one or more perfluorinated epoxides which may be useful in applications including refrigerants, air conditioning, heat transfer media, high-temperature heat pumps, organic Rankine cycles, fire extinguishing/fire suppression, propellants, foam blowing, solvents, dielectrics, and/or cleaning fluids.

A hydrofluoroolefin ether represented by the general Formula (I), compositions that include such compounds, and apparatuses and methods for use that include such compositions and compounds, wherein Formula (I) is represented by: R.sub.f—O—CH.sub.2CH═CHCH.sub.2—O—R.sub.f (I) wherein each Rf group is independently a linear, branched, and/or cyclic perfluoroalkyl group having 2 to 9 carbon atoms and optionally further including 1 to 3 nitrogen and/or oxygen catenary heteroatoms.

R.sub.f—O—CH.sub.2CH═CHCH.sub.2—O—R.sub.f   (I)

An aqueous composition includes (A) from 0.001 to 20 mass % of one or more kinds of fluorine-containing compounds selected from tetrafluoroboric acid, hexafluorosilicic acid, hexafluoroaluminic acid, hexafluorotitanic acid and a salt thereof, with respect to the total amount of the aqueous composition; and (B) from 0.0001 to 10 mass % of one or more kinds of compounds selected from a C.sub.4-13 alkylphosphonic acid, a C.sub.4-13 alkylphosphonate ester, a C.sub.4-13 alkyl phosphate and a salt thereof, with respect to the total amount of the aqueous composition.

An aqueous composition includes (A) from 0.001 to 20 mass % of one or more kinds of fluorine-containing compounds selected from tetrafluoroboric acid, hexafluorosilicic acid, hexafluoroaluminic acid, hexafluorotitanic acid and a salt thereof, with respect to the total amount of the aqueous composition; and (B) from 0.0001 to 10 mass % of one or more kinds of compounds selected from a C.sub.4-13 alkylphosphonic acid, a C.sub.4-13 alkylphosphonate ester, a C.sub.4-13 alkyl phosphate and a salt thereof, with respect to the total amount of the aqueous composition.

An azeotropic composition a formulated with 1,1,1,3,3,3,-hexafluoro-2-methoxypropane and a second component selected from the group consisting of isopropyl alcohol, ethanol, methanol, and trans-1,2-dichloroethylene. The azeotropic composition exhibits a substantially constant boiling point at a constant pressure and is useful for various cleaning and degreasing applications.