CLAIMS
1.
A method for producing a cyanohydrin, comprising allowing a carbonyl
compound to react with prussic acid in a buffer solution having a pH of less than 7
to obtain the cyanohydrin.
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2.
A method for producing a cyanohydrin, comprising adding prussic acid to a
buffer solution containing a carbonyl compound and having a pH of less than 7, and
being held in a predetermined temperature range, to allow the carbonyl compound to
react with the prussic acid in the buffer solution to thereby obtain the cyanohydrin.
3.
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The method according to claim 1 or 2, wherein the buffer solution comprises
a weak acid and a salt of the weak acid.
4.
The method according to any one of claims 1 to 3, wherein the buffer
solution comprises an organic acid and a salt of the organic acid.
5.
The method according to claim 4, wherein the organic acid is the same -
hydroxycarboxylic acid as an -hydroxycarboxylic acid produced when the
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cyanohydrin is hydrolyzed.
6.
The method according to claim 4, wherein the organic acid is glycolic acid.
7.
The method according to any one of claims 1 to 6, wherein the carbonyl
compound is an aldehyde.
8.
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The method according to any one of claims 1 to 7, wherein the carbonyl
compound is formaldehyde.
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