Английская Википедия:Dulcin
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Dulcin is an artificial sweetener about 250 times sweeter than sugar, discovered in 1883 by the Polish chemist Józef (Joseph) Berlinerblau (27 August 1859 – 1935).[1][2][3][4] It was first mass-produced about seven years later. Although it was discovered only five years after saccharin, it never enjoyed the latter compound's market success. Nevertheless, it was an important sweetener of the early 20th century and had an advantage over saccharin in that it did not possess a bitter aftertaste.
Early medical tests marked the substance as safe for human consumption, and it was considered ideal for diabetics. However, an FDA study in 1951 raised many questions about its safety, resulting in its removal from the market in 1954 after animal testing revealed chronic toxicity.[5] The FDA has also said that "the Federal Security Administrator regards these chemicals as poisonous substances which have no place in any food."[6] In Japan, poisoning accidents by dulcin occurred frequently, and use of dulcin was forbidden in 1969.[7]
Dulcin is also known by the names sucrol and valzin.[8]
Preparation
Dulcin can be produced by the addition of potassium cyanate to p-phenetidine hydrochloride in an aqueous solution at room temperature.[9]
An alternate way to make dulcin is by mixing urea and p-phenetidine hydrochloride to a mixture of hydrochloric acid and glacial acetic acid.[10]
Toxicity
Dulcin is toxic to rats at 0.1% of the diet and above. At 0.1%, it causes a slight slowdown in growth; at 1.0%, the slowdown is evident alongside an increase in mortality and noticeable histological changes in liver, kidney, spleen, and heart.[11]
See also
- 5-Nitro-2-propoxyaniline (P-4000), banned alongside dulcin by the FDA
References
Further reading
External links
- ↑ Шаблон:Cite journal ; see pp. 103–105. From p. 104: "Der Para-Aethoxyphenylharnstoff hat einen sehr süssen Geschmack." (Para-ethoxyphenylurea has a very sweet taste.)
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite journal
- ↑ For a biography of Joseph Berlinerblau (with photographs), see:
- ↑ Шаблон:Cite web
- ↑ Food and Drug Administration- Title 21 chapter 1 Federal Register Archive
- ↑ ズルチン標準品-Dulcin Standard (Japanese), Wako Pure Chemical Industries
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
