METAL CONTAINER FOR ORGANOTIN COMPOUND, REUSING METHOD THEREOF, AND METHOD FOR STORING ORGANOTIN COMPOUND

1 . A metal container for an organotin compound, wherein

the metal container comprises an inner surface having a diamond-like carbon layer coating,

the diamond-like carbon layer is (A) a fluorine-containing diamond-like carbon layer or (B) at least two diamond-like carbon layers different from each other, and

the diamond-like carbon layer has a thickness of 50 to 15,000 nm.

2 . The metal container for an organotin compound according to claim 1 , wherein the metal container comprises a metal selected from iron, nickel, copper, aluminum, and alloys thereof.

3 . The metal container for an organotin compound according to claim 1 , wherein the metal container comprises austenitic stainless steel.

4 . The metal container for an organotin compound according to claim 3 , wherein the austenitic stainless steel is vacuum double-melted SUS316L.

5 . The metal container for an organotin compound according to claim 1 , further comprising a bottom having an inner surface shape of an inverted truncated cone.

6 . The metal container for an organotin compound according to claim 1 , wherein the organotin compound is represented by the following chemical formula (1),

RpSnXm  (1)

wherein R represents a hydrocarbon group optionally substituted with a halogen atom; p is an integer of 0 to 4; X represents a hydrolysable substituent; m is an integer of 0 to 4; and m+p is 2 or 4.

7 . The metal container for an organotin compound according to claim 6 , wherein R represents a hydrocarbon group optionally substituted with a halogen atom; p is an integer of 1 to 3; X represents a hydrolysable substituent; m is an integer of 1 to 3; and m+p is 2 or 4.

8 . The metal container for an organotin compound according to claim 1 , wherein the organotin compound has a purity of not less than 99 mol %.

9 . The metal container for an organotin compound according to claim 1 , further comprising a lid comprising a hole through which the inner surface can be observed with a borescope.

10 . The metal container for an organotin compound according to claim 1 , wherein the at least two diamond-like carbon layers have hydrogen atom contents different from each other.

11 . The metal container for an organotin compound according to claim 1 , wherein, in the two diamond-like carbon layers, a first diamond-like carbon layer contacted with a container body is a-C:H (hydrogenated amorphous carbon) having a hydrogen atom content of 20 to 40 at %.

12 . The metal container for an organotin compound according to claim 1 , wherein, in the two diamond-like carbon layers, a second diamond-like carbon layer contacted with the organotin compound is ta-C (tetrahedral amorphous carbon) having a hydrogen atom content of not greater than 5 at %.

13 . A method for reusing the metal container for an organotin compound according to claim 1 , the method comprising steps of:

containing an organotin compound in the metal container;

using the contained organotin compound; and then

containing again a new organotin compound,

wherein the method further comprises a step of washing the metal container with at least one liquid selected from the group consisting of nitric acid, hydrofluoric acid, and water before the step of containing again the new organotin compound.

14 . A method for storing an organotin compound, the method comprising steps of:

containing an organotin compound in a metal container, wherein the metal container comprises an inner surface having a diamond-like carbon layer coating and the diamond-like carbon layer is (A) a fluorine-containing diamond-like carbon layer or (B) at least two diamond-like carbon layers different from each other, and

enclosing a noble gas or a mixture of noble gases in the metal container.