JPH0674234B2 - Method for producing sodium propionate - Google Patents
Method for producing sodium propionateInfo
- Publication number
- JPH0674234B2 JPH0674234B2 JP28531985A JP28531985A JPH0674234B2 JP H0674234 B2 JPH0674234 B2 JP H0674234B2 JP 28531985 A JP28531985 A JP 28531985A JP 28531985 A JP28531985 A JP 28531985A JP H0674234 B2 JPH0674234 B2 JP H0674234B2
- Authority
- JP
- Japan
- Prior art keywords
- sodium propionate
- reaction
- sodium carbonate
- producing sodium
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、パンやケーキの保存料あるいは動物飼料保存
料としてよく用いられているプロピオン酸ナトリウムの
製造方法に関するものである。TECHNICAL FIELD The present invention relates to a method for producing sodium propionate, which is often used as a preservative for bread and cake or a preservative for animal feed.
（従来技術およびその問題点） 従来、プロピオン酸ナトリウムの製造法では、プロピオ
ン酸と水酸化ナトリウムとの反応あるいはプロピオン酸
と炭酸ナトリウムとの反応で得られているが、これらの
場合、水を用いないで反応を進行させても、反応によっ
て生成する水があるため、最終的には乾燥工程が必要で
あった。(Prior art and its problems) Conventionally, in the production method of sodium propionate, it has been obtained by the reaction of propionic acid and sodium hydroxide or the reaction of propionic acid and sodium carbonate. In these cases, water is used. Even if the reaction was allowed to proceed without it, there was water generated by the reaction, so a drying step was finally required.
本発明は、この乾燥工程を省略することを目的とするも
のである。The present invention aims to omit this drying step.
（問題点を解決するための手段） 本発明者等は、炭酸ナトリウムと無水プロピオン酸との
反応においては水が発生しないことに着目し、鋭意検討
した結果、水分の少い炭酸ナトリウムに無水プロピオン
酸を徐々に加えることにより反応を進行させ、水分の少
いプロピオン酸ナトリウムを得る工業的製造方法を見い
だし、本発明に到達した。(Means for Solving Problems) The inventors of the present invention have paid attention to the fact that water is not generated in the reaction between sodium carbonate and propionic anhydride, and as a result of diligent studies, as a result, anhydrous sodium propionate was added to sodium carbonate having a low water content. The present invention has been achieved by finding an industrial production method for obtaining sodium propionate having a low water content by advancing the reaction by gradually adding an acid.
即ち、本発明は炭酸ナトリウムと無水プロピオン酸とを
反応させることを特徴とするプロピオン酸ナトリウムの
製造方法である。That is, the present invention is a method for producing sodium propionate, which comprises reacting sodium carbonate with propionic anhydride.
本発明の実施にあたっては、粉体攪拌状態の炭酸ナトリ
ウムに、１〜1.2倍当量の液状無水プロピオン酸を徐々
に添加すればよく、反応終了後、特別の乾燥工程を経る
ことなく乾燥プロピオン酸ナトリウムを得ることができ
る。In the practice of the present invention, to sodium carbonate in a powder-stirred state, 1 to 1.2 times equivalent of liquid propionic anhydride may be gradually added, and after completion of the reaction, dried sodium propionate without undergoing a special drying step. Can be obtained.
本発明において炭酸ナトリウムに無水プロピオン酸を添
加する速度は特に限定されないが、工業的には３時間以
内で添加するのが有利であろう。In the present invention, the rate of adding propionic anhydride to sodium carbonate is not particularly limited, but industrially it is advantageous to add it within 3 hours.
反応温度についても特に限定はないが、反応時間の短縮
を望むならば60〜90℃で行なう方が良い。The reaction temperature is not particularly limited, but if it is desired to shorten the reaction time, it is better to carry out at 60 to 90 ° C.
また、本発明を実施するに当って使用する炭酸ナトリウ
ムは当然のことながら水分が少なければ少いほどよい
が、一般的には水分１％以下のものが好ましく使用され
る。The sodium carbonate used in carrying out the present invention is naturally better the less the water content is, but generally, the one having a water content of 1% or less is preferably used.
（発明の効果） 本発明の方法により （１）水分の乾燥操作が不必要である。(Effect of the Invention) According to the method of the present invention, (1) a drying operation of water is unnecessary.
（２）従って、乾燥工程時間が無くなるため、工業的プ
ロセスのトータル工程時間の大幅な短縮が出来る。(2) Therefore, since the drying process time is eliminated, the total process time of the industrial process can be greatly shortened.
（３）乾燥に必要な設備が不用となり、工業上非常に有
利である。(3) The equipment required for drying is unnecessary, which is very advantageous in industry.
実施例1. 炭酸ナトリウム25kg（236モル、水分0.5％）をジャケッ
ト付140lリボンブレンダーに仕込み、攪拌状態にしてお
き、これに無水プロピオン酸30.7kg（236モル）を２時
間かけて仕込んだ。この時、品温は70℃に保ち、仕込
後、１時間混合を続け攪拌を停止した。Example 1. Sodium carbonate 25 kg (236 mol, water content 0.5%) was charged into a jacketed 140 l ribbon blender, and the mixture was kept in a stirring state, and then propionic anhydride 30.7 kg (236 mol) was charged over 2 hours. At this time, the product temperature was kept at 70 ° C., and after the preparation, mixing was continued for 1 hour and stirring was stopped.
得られたプロピオン酸ナトリウムの水分は、0.25％であ
り、反応率は98％を超えて、このまま製品として扱える
ものであった。The water content of the obtained sodium propionate was 0.25%, and the reaction rate exceeded 98%, and it could be handled as a product as it was.
実施例2. 炭酸ナトリウム25kg（236モル）（水分0.5％）をジャケ
ット付140lリボンブレンダーに仕込み、攪拌状態にして
おき、品温を90℃に保ちながら、無水プロピオン酸30.7
kg（236モル）を２時間かけて仕込んだ後、１時間混合
を続け、攪拌を停止した。この時の反応率は87％であっ
たので、更に無水プロピオン酸を5kg（38.5モル）追加
仕込みし、１時間混合を行なった。Example 2. 25 kg (236 mol) of sodium carbonate (water content 0.5%) was charged into a 140 l ribbon blender with a jacket, and the mixture was kept in a stirring state, while maintaining the temperature of the product at 90 ° C.
After charging kg (236 mol) over 2 hours, mixing was continued for 1 hour and stirring was stopped. Since the reaction rate at this time was 87%, 5 kg (38.5 mol) of propionic anhydride was additionally charged and mixed for 1 hour.
得られたプロピオン酸ナトリウムの水分は0.05％であ
り、反応率は98％であった。The water content of the obtained sodium propionate was 0.05%, and the reaction rate was 98%.
Claims (1)
応させることを特徴とするプロピオン酸ナトリウムの製
造方法1. A method for producing sodium propionate, which comprises reacting sodium carbonate with propionic anhydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28531985A JPH0674234B2 (en) | 1985-12-18 | 1985-12-18 | Method for producing sodium propionate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28531985A JPH0674234B2 (en) | 1985-12-18 | 1985-12-18 | Method for producing sodium propionate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62145042A JPS62145042A (en) | 1987-06-29 |
| JPH0674234B2 true JPH0674234B2 (en) | 1994-09-21 |
Family
ID=17689995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28531985A Expired - Lifetime JPH0674234B2 (en) | 1985-12-18 | 1985-12-18 | Method for producing sodium propionate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674234B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4913705B2 (en) * | 2007-11-05 | 2012-04-11 | マックス株式会社 | Air supply structure and ventilation system and building using the same |
| CN108191637A (en) * | 2018-01-03 | 2018-06-22 | 江苏润普食品科技股份有限公司 | The synthetic method of sodium propionate |
-
1985
- 1985-12-18 JP JP28531985A patent/JPH0674234B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62145042A (en) | 1987-06-29 |
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