A predoping material is used for an alkali metal ion electric storage device and is represented by Formula (1):
RSM)n  (1)
where M represents lithium or sodium; n represents an integer of 2 to 6; and R represents an aliphatic hydrocarbon, optionally substituted aromatic hydrocarbon, or optionally substituted heterocycle having 1 to 10 carbon atoms).

A predoping material is used for an alkali metal ion electric storage device and is represented by Formula (1):
RSM)n  (1)
where M represents lithium or sodium; n represents an integer of 2 to 6; and R represents an aliphatic hydrocarbon, optionally substituted aromatic hydrocarbon, or optionally substituted heterocycle having 1 to 10 carbon atoms).

Provided is an enzymatic process for preparing mercaptans from disulfides.

Provided is an enzymatic process for preparing mercaptans from disulfides.

The present invention generally relates to the manufacture of methyl mercaptan using recycled dimethyl sulfide. In particular, the invention relates to a process for the continuous production of methyl mercaptan via the catalytic conversion of dimethyl sulfide using a non-promoted Al.sub.2O.sub.3 catalyst at low temperatures.

The present invention generally relates to the manufacture of methyl mercaptan using recycled dimethyl sulfide. In particular, the invention relates to a process for the continuous production of methyl mercaptan via the catalytic conversion of dimethyl sulfide using a non-promoted Al.sub.2O.sub.3 catalyst at low temperatures.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof. Compositions comprising C.sub.11+ mercaptans, wherein the C.sub.11+ mercaptans are characterized by structure R.sup.6—SH, wherein R.sup.6 is an alkyl group derived from one or more C.sub.11+ monoolefins, and wherein the one or more C.sub.11+ monoolefins comprise C.sub.11 internal monoolefins, C.sub.12 internal monoolefins, C.sub.13 internal monoolefins, C.sub.14 internal monoolefins, 1-tetradecene, 1-hexadecene, or combinations thereof.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof. Compositions comprising C.sub.11+ mercaptans, wherein the C.sub.11+ mercaptans are characterized by structure R.sup.6—SH, wherein R.sup.6 is an alkyl group derived from one or more C.sub.11+ monoolefins, and wherein the one or more C.sub.11+ monoolefins comprise C.sub.11 internal monoolefins, C.sub.12 internal monoolefins, C.sub.13 internal monoolefins, C.sub.14 internal monoolefins, 1-tetradecene, 1-hexadecene, or combinations thereof.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof. Compositions comprising C.sub.11+ mercaptans, wherein the C.sub.11+ mercaptans are characterized by structure R.sup.6—SH, wherein R.sup.6 is an alkyl group derived from one or more C.sub.11+ monoolefins, and wherein the one or more C.sub.11+ monoolefins comprise C.sub.11 internal monoolefins, C.sub.12 internal monoolefins, C.sub.13 internal monoolefins, C.sub.14 internal monoolefins, 1-tetradecene, 1-hexadecene, or combinations thereof.

Provided are a removal liquid for removing an oxide of a Group III-V element, an oxidation prevention liquid for preventing the oxidation of an oxide of a Group III-V element or a treatment liquid for treating an oxide of a Group III-V element, each liquid including an acid and a mercapto compound; and a method using each of the same liquids. Further provided are a treatment liquid for treating a semiconductor substrate, including an acid and a mercapto compound, and a method for producing a semiconductor substrate product using the same.