JPH039983A - Inhibition of oxidation - Google Patents
Inhibition of oxidationInfo
- Publication number
- JPH039983A JPH039983A JP14389789A JP14389789A JPH039983A JP H039983 A JPH039983 A JP H039983A JP 14389789 A JP14389789 A JP 14389789A JP 14389789 A JP14389789 A JP 14389789A JP H039983 A JPH039983 A JP H039983A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- dry ice
- oxidation
- solution
- substance
- 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.)
- Pending
Links
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 19
- 230000003647 oxidation Effects 0.000 title abstract description 10
- 230000005764 inhibitory process Effects 0.000 title description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 235000011089 carbon dioxide Nutrition 0.000 claims abstract description 20
- 239000012476 oxidizable substance Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 19
- 239000001301 oxygen Substances 0.000 abstract description 19
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 229930195733 hydrocarbon Natural products 0.000 abstract description 4
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 125000005842 heteroatom Chemical group 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 150000001336 alkenes Chemical class 0.000 abstract description 2
- 125000003118 aryl group Chemical group 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 4
- -1 roll neck) Chemical class 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- SMNDYUVBFMFKNZ-UHFFFAOYSA-N 2-furoic acid Chemical class OC(=O)C1=CC=CO1 SMNDYUVBFMFKNZ-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 150000001716 carbazoles Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229960001701 chloroform Drugs 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002475 indoles Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000004780 naphthols Chemical class 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 125000000018 nitroso group Chemical group N(=O)* 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003458 sulfonic acid derivatives Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Anti-Oxidant Or Stabilizer Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、被酸化性物質の酸素による酸化を防止するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention prevents oxidation of oxidizable substances by oxygen.
従来技術］
各種新機能材料や生理活性物質の基本物質として最近重
要視されているヘテロ（窒素、酸素、イオウ等の原子を
含む）化合物（例えば芳香族アミン類、とロール頚等の
含窒素化合物、フラン類、ナフトール類等の含酸素化合
物）及びオレフィン化合物は、その安定性が乏しく、貯
蔵又は運搬中に着色や沈澱物生成を引き起こし易い、ま
たこの傾向は、それらの物質を極微量含んでいる原油、
石油製品及び新燃料油（石炭液化油、シエールオイル、
タールサントビチューメン、バイオマス）α化油等〉に
ついても同様にみられる。この原因は、空気中の酸素又
は溶液中に溶存しているＩｆｉｆ１ｍ２素による自動酸
化反応にある。なお、この酸化反応の防止には、従来、
フェノール頚やアミン類などの酸化防止剤がよく使われ
ている。しかし、この方法では、被酸化性物質を多種類
含む液体の場合には、幾種かの防止剤を併用しないと完
全に酸化反応を防止することが難しい。また、この方法
によると添加した酸化防止剤を後で分離することができ
ず、化学反応系や最終製品中に含まれることになる。そ
のため、利用に際し反応阻害や番性の問題を引き起こす
危険性がある。一方、分離が可能な方法として、窒素、
ヘリウム、アルゴン等の不活性ガスをバブリングして、
溶液中に溶存している微量酸素を追い出す方法があるが
、この方法には、前記不活性ガスが溶液中に長期間溶存
して残らない（酸素が再び入りやすい）ことや純粋ガス
を使用するので不経済であるという欠点がある。[Prior art] Hetero (containing atoms such as nitrogen, oxygen, sulfur, etc.) compounds (e.g., aromatic amines, nitrogen-containing compounds such as roll neck), which have recently become important as basic substances for various new functional materials and physiologically active substances Oxygen-containing compounds such as chlorine, furans, naphthols, etc.) and olefin compounds have poor stability and tend to cause discoloration and precipitate formation during storage or transportation. crude oil,
Petroleum products and new fuel oils (liquefied coal oil, sierre oil,
The same is true for tar sant bitumen, biomass) pregelatinized oil, etc. The cause of this is an autooxidation reaction caused by oxygen in the air or Ifif1m2 element dissolved in the solution. In addition, to prevent this oxidation reaction, conventionally,
Antioxidants such as phenol and amines are often used. However, with this method, in the case of a liquid containing many types of oxidizable substances, it is difficult to completely prevent the oxidation reaction unless several types of inhibitors are used in combination. Furthermore, according to this method, the added antioxidant cannot be separated later, and will be included in the chemical reaction system or final product. Therefore, when used, there is a risk of reaction inhibition or problems with countability. On the other hand, nitrogen,
By bubbling inert gas such as helium or argon,
There is a method to expel trace amounts of oxygen dissolved in the solution, but this method requires that the inert gas does not remain dissolved in the solution for a long time (oxygen easily re-enters) and that pure gas is used. Therefore, it has the disadvantage of being uneconomical.
［発明が解決しようとする課題］
本発明は、被酸化性物質のｍ素による酸化を防止し、そ
の安定性を維持することを目的としている。[Problems to be Solved by the Invention] An object of the present invention is to prevent oxidizable substances from being oxidized by m atoms and maintain their stability.
構成コ
本発明では、被１ヒ性物質の酸素による酸化を防止する
ため、物質が溶液の場合にはそれに直接又はそれが溶け
ている溶液に、物質が個体の場合にはそれが溶けている
溶液に適量のドライアイス（二酸化炭素）を添加し、溶
解させた後完全密封する。溶液に溶解した二酸化炭素は
、溶存している酸素が被酸化性物質に作用して酸化反応
のきっかけとなるラジカル（反応活性点）または反応性
の強い一重項酸素を生成するのを防止する働きをする。Constituent In the present invention, in order to prevent the oxidation of the arsenic substance by oxygen, when the substance is in a solution, it is used directly or in a solution in which it is dissolved, and when the substance is a solid substance, it is dissolved in it. Add an appropriate amount of dry ice (carbon dioxide) to the solution, dissolve it, and then completely seal it. Carbon dioxide dissolved in a solution works to prevent dissolved oxygen from acting on oxidizable substances and producing radicals (reactive active sites) that trigger oxidation reactions or highly reactive singlet oxygen. do.
被酸化性物質としては、ヘテロ（窒素、硫黄、酸素）化
合物、オレフィン及び芳香族炭化水素、パラフィン系炭
化水素、溶媒に対し溶解性の大きい無機化合物等が含ま
れる。又、原油、石油製品、新燃料波は、それ自身各種
炭化水素の混合物であるので、被酸化性物質として扱う
、なお、窒素化合物は、とロール類、インドール類、カ
ルバゾール類、アミン類、アミド類、ニトロ及びニトロ
ソ類、ビタミン類、アゾ及びジアゾ系色素等を意味する
。Examples of oxidizable substances include hetero (nitrogen, sulfur, oxygen) compounds, olefins and aromatic hydrocarbons, paraffinic hydrocarbons, inorganic compounds highly soluble in solvents, and the like. In addition, crude oil, petroleum products, and new fuels are themselves mixtures of various hydrocarbons, so they are treated as oxidizable substances.Nitrogen compounds include androles, indoles, carbazoles, amines, and amides. nitro and nitrosos, vitamins, azo and diazo pigments, etc.
又、硫黄化合物は、スルファミン類、スルフォン酸誘導
体等を、酸素化合物は、フラン頚、カルボン酸誘導体く
アミノ酸、アミド酸、イミド酸）等を意味する。被酸化
性物質の溶媒としては、水、アルコール（メタノール、
エタノール等）、ケトン（アセトン）、炭化水素（ヘキ
サン、ヘプタン、オクタン、シクロヘキサン、ベンゼン
、 トルエン、キシレン等）有機塩素化合物（四塩化炭
素、ジクロロメタン、 トリクロロメタン、 トリクロ
ロエチレン等）等が含まれる。添加するドライアイスの
形状は、添加中に生じる泡立ちにより酸素が再溶解する
のを防止する冷め、出来るだけ微細であることが望まし
い、溶液に解けたドライアイスは、自ら拡散していくの
で、特に溶液を振とうや攪はんする必要はない、酸化を
防止するためのドライアイス投入量は、溶液の総量によ
って異なるが、溶液３ｍｌに対して約０．２ｇ（約７％
）程度で十分である。Sulfur compounds include sulfamines, sulfonic acid derivatives, etc., and oxygen compounds include furanic acid derivatives, carboxylic acid derivatives (amino acids, amic acids, imide acids), and the like. Examples of solvents for oxidizable substances include water, alcohol (methanol,
(ethanol, etc.), ketones (acetone), hydrocarbons (hexane, heptane, octane, cyclohexane, benzene, toluene, xylene, etc.), organic chlorine compounds (carbon tetrachloride, dichloromethane, trichloromethane, trichloroethylene, etc.), etc. It is desirable that the shape of the dry ice to be added be as fine as possible to prevent oxygen from redissolving due to the bubbling that occurs during addition.Dry ice that has been dissolved in a solution will diffuse by itself, so There is no need to shake or stir the solution.The amount of dry ice to prevent oxidation varies depending on the total amount of solution, but it is approximately 0.2g (approximately 7%
) is sufficient.
今後の研究結果を待たなければ明確な説明ができない０
本発明で用いるドライアイスは、特別な（ｐｐｂレベル
の不純物を間Ｈζこする）場合を除き精製したものであ
る必要はなく、一般に市販されているもので十分である
。A clear explanation cannot be given unless we wait for future research results0
The dry ice used in the present invention does not need to be purified except in special cases (to remove impurities at the ppb level), and generally commercially available dry ice is sufficient.
［実施例］ 次に、本発明を実施例によりさらに詳細に説明する。[Example] Next, the present invention will be explained in more detail with reference to Examples.
作用］
本発明によれば、被酸化性物質に対する酸素の酸化反応
をドライアイス（二酸化炭素）が妨げるので、溶液中に
酸素が溶存していても被酸化性物質の酸化が防止できる
。また、この効果は、密封時に容器中に残存した酸素に
対しても同様に働く、なお、酸化反応の防止機構につい
ては、二酸化炭素による酸素の追い出しく置換）作用ま
たは酸素と二酸化炭素との何等かの相互作用によると考
えられるが、実施例 １
被酸化性の強い１． ２． ５−）リメチルビロールを
２ｘｌＯ−’Ｍ含むｎ−ヘキサン溶液２５ ｍ ｌに対
し、ドライアイスを小量加えた場合と加えない場合の着
色及び沈澱物生成状態を比較した。なお溶液は、蛍光灯
下、室温で静置した。その結果、ドライアイスを加えな
い溶液では、 １． ２． ５−）リメチルビロールの
酸化が急速に進み、２４時間以内で黄緑色に着色し、一
部沈澱物の生成も認められた、これに対し、 ドライア
イスを約０．３ｇ加えた溶液では、 １２０時間経過後
においても着色、沈澱物生成とも全く認められず、透明
で安定な状態が続いた。すなわち、小量のドライアイス
添加によって、 １． ２． ５−）リメチルビロール
の酸化反応の防止ができた。Effect] According to the present invention, since dry ice (carbon dioxide) prevents the oxidation reaction of oxygen to the oxidizable substance, oxidation of the oxidizable substance can be prevented even if oxygen is dissolved in the solution. In addition, this effect also works on the oxygen remaining in the container when it is sealed.The mechanism for preventing the oxidation reaction is due to the effect of displacement of oxygen by carbon dioxide or the interaction between oxygen and carbon dioxide. This is thought to be due to the interaction described above. 2. 5-) The state of coloration and precipitate formation was compared when a small amount of dry ice was added to 25 ml of an n-hexane solution containing 2xlO-'M of remethylvirol, and when a small amount of dry ice was not added. The solution was allowed to stand at room temperature under a fluorescent lamp. As a result, in a solution without adding dry ice, 1. 2. 5-) Limethylvirol oxidation progressed rapidly, turning yellow-green within 24 hours, and some precipitates were also observed. In contrast, in a solution containing approximately 0.3 g of dry ice, the oxidation took place within 120 hours. Even after the elapsed time, no coloration or precipitate formation was observed, and the product remained transparent and stable. That is, by adding a small amount of dry ice, 1. 2. 5-) The oxidation reaction of remethylvirol could be prevented.
実施例 ２
酸化反応が進行すると蛍光性物質からの蛍光強度が減衰
することを利用して、 ドライアイスの酸化防止効果の
持続性を確認した。すなわち、ナフタレン１ｒｌＯ−３
Ｍを含む溶Ｋ１３ｍ１に対しドライアイスＱ、２ｇを加
え、容器を密封しないでナフタレンの蛍光強度の変化を
調べた。その結果、ナフタレンの蛍光強度は、 ドライ
アイス添加直後には任意の数値で１．７５で、その５分
後には１．９４となった。この値は、液体窒素による冷
却−減圧−溶融の繰り返しで脱酸素した場合の値にほぼ
等しいので、酸化反応が全く進行していないことを意味
する。３０分後の蛍光強度は、１．７まで低下したが、
それ以降の低下はほとんどなく、２時間後でも１．５の
値を示した。このことから、 ドライアイスが密封条件
下でなくとも長時間の酸化防止効果を示すことがわかる
。しかし、−船釣には、少しの酸化でも許されない場合
が多いので、密封が必要となる。Example 2 The sustainability of the antioxidant effect of dry ice was confirmed by utilizing the fact that the intensity of fluorescence from a fluorescent substance attenuates as the oxidation reaction progresses. That is, naphthalene 1rlO-3
2 g of dry ice Q was added to 13 ml of molten K containing M, and changes in the fluorescence intensity of naphthalene were examined without sealing the container. As a result, the fluorescence intensity of naphthalene was an arbitrary value of 1.75 immediately after the addition of dry ice, and 1.94 5 minutes later. This value is approximately equal to the value obtained when oxygen is removed by repeated cooling, depressurization, and melting using liquid nitrogen, which means that no oxidation reaction has proceeded at all. The fluorescence intensity after 30 minutes decreased to 1.7, but
There was almost no decrease after that, and the value remained at 1.5 even after 2 hours. This shows that dry ice exhibits a long-term antioxidant effect even when not under sealed conditions. However, for boat fishing, even a small amount of oxidation is often unacceptable, so sealing is required.
Claims (1)
を添加し、かつ容器を密封することを特徴とする物質の
酸化反応防止法。A method for preventing oxidation reactions of substances, which comprises adding an appropriate amount of dry ice to an oxidizable substance or a solution containing the same, and sealing the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14389789A JPH039983A (en) | 1989-06-06 | 1989-06-06 | Inhibition of oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14389789A JPH039983A (en) | 1989-06-06 | 1989-06-06 | Inhibition of oxidation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH039983A true JPH039983A (en) | 1991-01-17 |
Family
ID=15349601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14389789A Pending JPH039983A (en) | 1989-06-06 | 1989-06-06 | Inhibition of oxidation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH039983A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587723A (en) * | 1978-12-27 | 1980-07-02 | Tsumura Juntendo Inc | Preservation of crude drug |
| JPS5831939A (en) * | 1981-08-19 | 1983-02-24 | Kyodo Nyugyo Kk | How to preserve coffee extract |
| JPS58155069A (en) * | 1982-02-16 | 1983-09-14 | ダブリユ−・ア−ル・グレイス・アンド・カンパニ− | Gas rinsing by dryice |
-
1989
- 1989-06-06 JP JP14389789A patent/JPH039983A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587723A (en) * | 1978-12-27 | 1980-07-02 | Tsumura Juntendo Inc | Preservation of crude drug |
| JPS5831939A (en) * | 1981-08-19 | 1983-02-24 | Kyodo Nyugyo Kk | How to preserve coffee extract |
| JPS58155069A (en) * | 1982-02-16 | 1983-09-14 | ダブリユ−・ア−ル・グレイス・アンド・カンパニ− | Gas rinsing by dryice |
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