基本情報
- 標準SMILES
O=C1CCC(=O)O1- InChIKey
RINCXYDBBGOEEQ-UHFFFAOYSA-N- 分子式
- C4H4O3
- 平均分子量
- 100.07 g/mol
- 単同位体質量
- 100.01604399
名称と識別子
- 優先名称
- Succinic anhydride
- IUPAC
- oxolane-2,5-dione
- 現地名
- こはく酸無水物
- 英語名
- Succinic anhydride
- 分子式
- C4H4O3
- 分子量
- 100.07
名称と別名
名称をさらに表示
データベース識別子
- CAS
108-30-5、68412-02-2- PubChem CID
- 7922
- DTXSID
DTXSID7021287- ChEMBL
CHEMBL1370164- ChEBI
CHEBI:36595- UNII
- 6RF4O17Z8J
- EC Number
- 203-570-0
- Nikkaji
- J3.248D
物性
構造計算による物性
- XLogP
- -0.5
- 極性表面積
- 43.4 Ų
- 水素結合供与体数
- 0
- 水素結合受容体数
- 3
- 回転可能結合数
- 0
- 重原子数
- 7
- 形式電荷
- 0
- 複雑度
- 102
実験および物理化学的性質
Density
1.234 at 68 °F (NTP, 1992) - Denser than water; will sink
1.503 (also given as 1.104 and 1.234)
Bulk density: 47.2 lb/cu ft
Relative density (water = 1): 1.503
1.104 @25 °C
Color/Form
NEEDLES FROM ALC; RHOMBIC PYRAMIDS FROM CHLOROFORM OR CARBON TETRACHLORIDE
COLORLESS OR LIGHT-COLORED NEEDLES OR FLAKES
Orthorhombic prisms from abs alc.
Succinic anhydride forms rhombic pyramidal or bipyramidal crystals.
Solubility
less than 1 mg/mL at 70 °F (NTP, 1992)
Insoluble in water
IN ETHANOL AT 25 °C: 2.56 G/100 ML; IN ETHER AT 25 °C: 0.64 G/100 ML; IN CHLOROFORM AT 25 °C: 0.87 G/100 ML
Soluble in chloroform, carbon tetrachloride, alcohol; very slightly soluble in ether and water.
Solubility in water: none
Flash Point
157 °C
157 °C
Boiling Point
502 °F at 760 mmHg (NTP, 1992)
261 °C at 760 mm Hg
261 °C
261 °C @760 [mm Hg]
Melting Point
247.3 °F (NTP, 1992)
119.6 °C
119 °C
119.6 °C
119.6 °C
Vapor Density
3.7 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
Relative vapor density (air = 1): 3.45
Vapor Pressure
1 mmHg at 197.6 °F ; 5 mmHg at 239.0 °F; 10 mmHg at 262.8 °F (NTP, 1992)
0.0015 [mmHg]
Vapor pressure = 1 mm Hg at 92 °C
1.5X10-3 mm Hg at 25 °C (estrapolated)
Vapor pressure, kPa at 92 °C: 1.3
1 [mm Hg] @92 °C
物理化学的性質
- 融点
- 118 · 118-120 °C (lit.)
- 沸点
- 261 °C · 261 °C (lit.)
- 比重(密度)
- 1 · 1,572 g/cm3
- 蒸気密度
- 3.5 · 3.5 (vs air)
- 蒸気圧
- 1 mm · 1 mm Hg ( 92 °C)
- 屈折率
- 1.4688 · 1.4688 (estimate)
- 闪点
- 157 °C · 157°C
- 貯蔵温度
- 30 °C · Store below +30°C.
- 溶解性
- 62.9 g/l · 62.9g/l 加水分解
- 外見
- 個体
- 酸解離定数(Pka)
- 4.67 · 4.67[at 20 ℃]
- 色
- ホワイトからオフホワイト
- 比重
- 1.234 · 1.2340 (20℃)
- PH
- 2.7 · 2.7 (10g/l, H2O)
- 臭い (Odor)
- Odorless
- 水溶解度
- 0.1 g/100 · <0.1 g/100 mL at 21 ºC (分解)
- Merck
- 14 · 14,8870
- BRN
- 108441 · 108441
- 安定性
- 安定。酸化剤、強酸、強塩基、アルコール、アミンとは相容れない。水や湿気にさらさないでください。
- InChI
- 1S/C4H4O3/c5-3-1-2-4(6)7-3/h1-2H2
- InChIKey
- RINCXYDBBGOEEQ-UHFFFAOYSA-N
- SMILES
- O=C1CCC(=O)O1
- LogP
- 2.44 at · 2.44 at 40℃
- CAS データベース
- 108 · 108-30-5(CAS DataBase Reference)
- NISTの化学物質情報
- 2 · 2,5-Furandione, dihydro-(108-30-5)
- EPAの化学物質情報
- Succinic anhydride (108-30-5)
化学的性質
化学的特性fine white crystalline solid
化学的特性Succinic anhydride is an odourless, colourless needle-like or white crystalline solid natural product. Molecular formula C4H4O3, molecular weight 100.07 g/mol, relative density 1.503, melting point 237 °F. 239 °F at 5 mmHg, 239 °F at 198 °F and 1 mmHg. Soluble in chloroform, carbon tetrachloride, and ethanol; very slightly soluble in ether and water (insoluble in water). Moderately toxic and irritating, emits pungent and irritating fumes when heated to decomposition.
安全と法規制
GHS分類
GHS Classification
Danger
H302: Harmful if swallowed [Warning Acute toxicity, oral];H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation];H317: May cause an allergic skin reaction [Warning Sensitization, Skin];H318: Causes serious eye damage [Danger Serious eye damage/eye irritation];H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]
P233, P260, P261, P264, P264+P265, P270, P271, P272, P280, P284, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P333+P317, P342+P316, P362+P364, P363, P403, P405, and P501 (click each P-code to see the statement)
This chemical does not meet GHS hazard criteria for 0.2% (2 of 1275) of reports.
危険有害性情報
Regulatory Information
Chemical: 2,5-Furandione, dihydro-
Hazard Traits - Respiratory Toxicity;Authoritative List - EC Annex VI Resp. Sens. - Cat. 1;Report - if used as a fragrance or flavor ingredient
2,5-Furandione, dihydro- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 2,5-Furandione, dihydro- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 18-05-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/2061;Status: Active Update: 05-09-2019 https://echa.europa.eu/registration-dossier/-/registered-dossier/30019
Succinic anhydride: Does not have an individual approval but may be used under an appropriate group standard
Fire Hazards
Flash point data for this compound are not available, however, it is probably combustible. (NTP, 1992)
Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Finely dispersed particles form explosive mixtures in air.
Health Hazards
SYMPTOMS: Symptoms of exposure to this chemical may include eye, skin, mucous membrane and respiratory tract irritation; it may blister and burn the skin on contact.;ACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits acrid smoke and fumes of carbon monoxide and carbon dioxide. It may cause eye, respiratory tract, mucous membrane and skin irritation. It is a suspected carcinogen. (NTP, 1992)
Hazards Summary
A skin, eye, and respiratory tract irritant; [HSDB] May cause blisters and burns to skin; [CAMEO] The substance is severely irritating to the eyes and is irritating to the respiratory tract. [ICSC] An irritant (severe to eyes); [MSDSonline] See ACID ANHYDRIDES.
Reactivity Profile
SUCCINIC ANHYDRIDE reacts exothermically with water. Reactions are usually slow, but might become violent if local heating accelerates their rate. Acids accelerate the reaction with water. Incompatible with acids, strong oxidizing agents, alcohols, amines, and bases.
安全と保護具
Fire Fighting
Fires involving this compound should be controlled using a Halon, carbon dioxide, or dry chemical extinguisher. A water spray may also be used. (NTP, 1992)
Use water spray, powder, alcohol-resistant foam, carbon dioxide.
First Aid Measures
Fresh air, rest.
Rinse and then wash skin with water and soap.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth. Give one or two glasses of water to drink.
First Aid
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.;SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.;INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.;INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)
Nonfire Spill Response
SMALL SPILLS AND LEAKAGE: If a spill of this chemical occurs, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with acetone and transfer the dampened material to a suitable container. Use absorbent paper dampened with acetone to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with acetone followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.;STORAGE PRECAUTIONS: You should store this material at ambient temperatures, and protect it from moisture. (NTP, 1992)
Disposal Methods
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
Preventive Measures
Prevent dispersion of dust!
Inhalation /exposure can be prevented by/ local exhaust or breathing protection. Skin /exposure can be prevented by/ protective gloves. Eye /exposure can be prevented by/ safety goggles, or eye protection in combination with breathing protection if powder. /from table/
Do not eat, drink, or smoke during work. /from table/
毒性情報
Environmental Fate
TERRESTRIAL FATE: The half-life for the hydrolysis of succinic anhydride is 4.3 minutes(SRC), based on a rate constant of 0.0027 1/sec at 25 °C(1). The major fate of succinic anhydride in soil is expected to be hydrolysis (SRC). Succinic anhydride is not expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 1.5X10-3 mm Hg(2).
AQUATIC FATE: The half-life for the hydrolysis of succinic anhydride is 4.3 minutes(SRC), based on a rate constant of 0.0027 1/sec at 25 °C(1). The major fate of succinic anhydride in aquatic environments is expected to be hydrolysis(SRC). Bioconcentration of succinic anhydride in aquatic organisms is unlikely due its rapid hydrolysis(SRC). Approximately 78% of the succinic anhydride added to activated sewage sludge was biodegraded within five days(2,3); however, hydrolysis is expected to be the principal fate of succinic anhydride in water(SRC).
ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), succinic anhydride, which has a vapor pressure of 1.5X10-3 mm Hg at 25 °C(2) is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase succinic anhydride is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 70 days (SRC), calculated from its rate constant of 4.56X10-13 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(3).
Signs and Symptoms
Cough. Shortness of breath. Sore throat.
Redness. Pain.
Diarrhoea. Nausea. Vomiting.
Ongoing Test Status
The following link will take the user to the National Toxicology Program (NTP) Test Agent Search Results page, which tabulates all of the "Standard Toxicology & Carcinogenesis Studies", "Developmental Studies", and "Genetic Toxicity Studies" performed with this chemical. Clicking on the "Testing Status" link will take the user to the status (i.e., in review, in progress, in preparation, on test, completed, etc.) and results of all the studies that the NTP has done on this chemical. [http://ntp-apps.niehs.nih.gov/ntp_tox/index.cfm?fuseaction=ntpsearch.searchresults&searchterm=108-30-5]
Human Toxicity Excerpts
/SIGNS AND SYMPTOMS/ The substance irritates the eyes, the skin and the respiratory tract.
/SIGNS AND SYMPTOMS/ Inhalation /may cause/ cough, shortness of breath, sore throat. Skin or eye /exposure may cause/ redness, pain. Ingestion /may cause/ diarrhea, nausea, vomiting. /from table/
Artificial Pollution Sources
Succinic anhydride's production and use as a chemical reactant and intermediate, in the manufacture of pharmaceuticals and esters, as a hardener for resin(1), and as an acidulant in foods(2) may result in its release to the environment through various waste streams(SRC).
Environmental Biodegradation
AEROBIC: Approximately 78% of the succinic anhydride added to activated sewage sludge at 50 ug/L was biodegraded within five days at 25 °C (1,2); however, hydrolysis is expected to be the principal fate of succinic anhydride in water and these results are probably for succinic acid, the hydrolysis product(SRC).
Carcinogen Classification
Succinic anhydride
Group 3: Not classifiable as to its carcinogenicity to humans
Volume 15: (1977) Some Fumigants, the Herbicides 2,4-D and 2,4,5-T, Chlorinated Dibenzodioxins and Miscellaneous Industrial Chemicals;Volume Sup 7: Overall Evaluations of Carcinogenicity: An Updating of IARC Monographs Volumes 1 to 42, 1987; 440 pages; ISBN 92-832-1411-0 (out of print)
1987
1987
Succinic Anhydride
Environmental Bioconcentration
Bioconcentration of succinic anhydride in aquatic organisms is unlikely due its rapid hydrolysis(1). Experimental bioconcentration factors (chemical concentration in fish/chemical concentration in water) of succinic anhydride in fish (Golden ide) were less than 10(2,3).
法規制情報
Regulatory Information
Chemical: 2,5-Furandione, dihydro-
Hazard Traits - Respiratory Toxicity;Authoritative List - EC Annex VI Resp. Sens. - Cat. 1;Report - if used as a fragrance or flavor ingredient
2,5-Furandione, dihydro- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 2,5-Furandione, dihydro- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 18-05-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/2061;Status: Active Update: 05-09-2019 https://echa.europa.eu/registration-dossier/-/registered-dossier/30019
Succinic anhydride: Does not have an individual approval but may be used under an appropriate group standard
安全データ
- F
- 21
- wgk
- 1
- tsca
- TSCA listed
- rtecs
- WN0875000
- ridadr
- UN 3261 8 / PGII
- 毒性
- LD50 orally in Rabbit: 1510 mg/kg
- hs_code
- 29171990
- risk_code
- 36/37-22
- 化審法
- (2)-921
- hazard_code
- Xi,Xn
- safety_code
- 25-46
- hazard_class
- 8
- 自然発火温度
- 480 °C
- Hazard Classifications
- Acute Tox. 4 OralEye Dam. 1Resp. Sens. 1Skin Corr. 1BSkin Sens. 1
- ストレージクラス
- 8A - Combustible corrosive hazardous materials
- 有毒物質データの
- 108-30-5(Hazardous Substances Data)
- 発がん性評価について
- IARC 3
化学と産業
薬理情報
用途と製造
Uses
Used as an acidulant and dehydrating agent (food processing), cross-linking agent (epoxy resins and ion exchange membranes), and in gas and water treatment; Also used to make adhesives, paint drying oils, dyes, pharmaceuticals, esters, elastomers (cable coverings and extruded articles), hardeners for resins, starch modifiers in foods, succinylated monoglyceride food emulsifiers, silver haloid photographic emulsions, detergents, cosmetics, plant growth regulators, textiles, surface-active agents, lubricant additives, fire-retardants for paper, insect repellants, and herbicides; [HSDB]
Textiles (Fiber & Fabric Manufacturing) [Category: Industry];Sewer and Wastewater Treatment [Category: Industry];Plastic Composites Manufacturing [Category: Industry]
Acidulant in processed foods
Dehydrating agent in dry food mixtures
Chemical intermediate for adhesives, dyes; elastomers for special tubings, cable coverings, and extruded articles.
Manufacture of chemicals, pharmaceuticals, esters; hardener for resins, starch modifier in foods.
U.S. Exports
(1972) No Data
(1975) No Data
(1984) 2.07X10+8 g /Anhydrides, Acyl Halides, and their derivatives/
U.S. Imports
(1972) 4.5X10+6 G (PRINCPL CUSTOMS DISTS)
(1974) 2.7X10+6 G (PRINCPL CUSTOMS DISTS)
(1984) 1.99X10+9 g /Organic acid anhydrides/
U.S. Production
2023: 50,000 - <250,000 lb;2022: 1,000,000 - <2,500,000 lb;2021: 400,000 - <550,000 lb;2020: 550,000 - <700,000 lb
2,5-Furandione, dihydro- is listed as a High Production Volume (HPV) chemical (65FR81686). Chemicals listed as HPV were produced in or imported into the U.S. in >1 million pounds in 1990 and/or 1994. The HPV list is based on the 1990 Inventory Update Rule. (IUR) (40 CFR part 710 subpart B; 51FR21438).
(1972) PROBABLY GREATER THAN 4.54X10+5 G
(1975) PROBABLY GREATER THAN 9.08X10+5 G
(1986) No Data
For more U.S. Production (Complete) data for SUCCINIC ANHYDRIDE (9 total), please visit the HSDB record page.
Methods of Manufacturing
Hydrogenation of maleic anhydride or fumaric acid; heating of succinic acid at elevated temperature and pressure.
...By treating succinic acid with diketene, succinyl chloride or acetic anhydride, or by reacting diethyl ester with boron chloride.
... Warming succinic acid with acetic anhydride, acetyl chloride, or phosphorus oxychloride.
Succinic anhydride is manufactured by catalytic hydrogenation of maleic anhydride. In the most widely used commercial process this reaction is performed in the liquid phase, at temperatures of 120-180 °C and at moderate pressures, in the range of 500-4000 kPa (72-580 psi). Catalysts mentioned in the patent literature include nickel, Raney nickel, palladium on different carriers, and palladium complexes.
Formulations/Preparations
Grade: distilled.
...Available in US as commercial grade containing at least 99.5% of pure chemical, with maximum of 0.5% unsaturated compound...0.15% chlorides, 0.04% sulfates...and 20 mg/kg heavy metals.
Flake
General Manufacturing Information
Plastics Material and Resin Manufacturing;Not Known or Reasonably Ascertainable;Textiles, apparel, and leather manufacturing;Asphalt Paving, Roofing, and Coating Materials Manufacturing
2,5-Furandione, dihydro-: ACTIVE
Anhydrous dentifrices containing an acid anhydride to maintain sweetener stability reported. Toothpaste containing 0.50 parts succinic anhydride is an example.
Succinic anhydride is...very useful dehydrating agent for removal of small amounts of moisture in...dry food mixtures which are later to be admixed with water. ...It is capable of taking up 20% of its weight of water, and the acid formed is desirable flavoring agent in many foods.
応用分野
解説dihydro-2,5-furandione.C4H4O3(100.07).コハク酸を無水酢酸,塩化アセチルなどと加熱すると得られる.融点120 ℃,沸点261 ℃,128 ℃(1.33 kPa).クロロホルム,エタノールに可溶,エーテル,水に微溶.無水コハク酸は,熱水やアルカリ性水溶液によりコハク酸またはその塩になる。無水アルコールと反応してモノエステルを,アミンとの反応でモノアミドが得られる.種々の合成反応原料のほか,アルキド樹脂,接着剤,可塑剤の製造原料としても利用される.森北出版「化学辞典(第2版)
用途加工食品用酸味料、脱水剤、合成樹脂原料
説明Succinic anhydride, also called di hydro - 2,5- furandione , is an organic compound with the molecular formula C4H4O3.This colorless solid is the acid anhydride of succinic acid.
使用Succinic Anhydride is an acidulant that hydrolyzes very slowly to succinic acid in water. it has thermal stability and a low melting point of 118°c which permits it to be used in products at compara- tively low temperatures. it is used as a leavening acidulant for bak- ing powder.
一般的な説明Colorless needles or white crystalline solid. Melting point 237°F. Sublimes at 239°F at 5 mm Hg pressure; and at 198°F and 1 mm Hg pressure. Moderately toxic and an irritant.
一般的な説明Succinic anhydride is a cyclic anhydride of succinic acid with a five-membered ring. It is widely used in the manufacture of polymeric materials, pharmaceuticals, agrochemicals, dyes, surface-active agents, and organic flame-retardant materials. It also finds application as a cross-linking agent in ion-exchange membranes and a curing agent for epoxy resins.
使用用途無水コハク酸は、多様な分野で幅広く使用されています。以下は主な使用用途です。 1. 合成樹脂原料 無水コハク酸は、アルキド樹脂や不飽和ポリエステル樹脂の製造に用いられます。これらの樹脂は、塗料、接着剤、プラスチックなどの製品に使用されています。 特に植物を由来としたコハク酸を用いた樹脂は、生分解性プラスチックとして、資源循環や、の削減に寄与すると期待されています。 2. 有機合成 無水コハク酸は、エステル化剤やアシル化剤として、有機化合物の合成に使用されます。これにより、さまざまな化学製品や中間体の製造が可能になります。医薬品の合成、染料や顔料の製造においても重要な役割を果たす物質です。 特に、Friedel-Crafts条件下でのアシル化にしばしば用いられています。そのほか、アルケニル基を有するアルケニル無水コハク酸 (ASA) は、エポキシ樹脂硬化剤や、製紙用のサイズ剤として用いられています。
調製方法
The compound is produced from succinic anhydride and hydrogen peroxide . This material must be stabilized by using a dehydrating agent such as disodium sulfate or magnesium sulfate.
製造方法A solution of succinic acid (500 mg, 42 mmol) and triethylamine (1.23 mL, 42 mmol) in anhydrous THF (120 mL) was allowed to react with triphosgene (42 mg, 7.0 mmol) at ice-water temperature for 10 min. The reaction mixture was subsequently stirred for a further 15 min at room temperature. The solution was then filtered, and the filtrate was concentrated to dryness. The residue was crystallized from ethyl acetate to afford the desired product as white crystals (370 mg, 85%).
製造方法無水コハク酸の製造方法 無水コハク酸の製造方法はいくつか存在します。工業的に用いられる方法は、メラミン-コハク酸プロセスです。 この方法では、メラミンとコハク酸を反応させて無水コハク酸を生成します。両者を混合し加熱すると、メラミンがコハク酸のカルボキシ基と反応して、中間体となるメラミンコハク酸塩が生成されます。その後、中間体を加熱すると無水コハク酸が生成され、メラミンが再生されます。 このプロセスでは、メラミンが反応後に再生・再利用され、触媒として機能するため、効率的に無水コハク酸を製造可能です。そのほか、を接触的に水素添加して製造する方法も一般的に用いられています。 また、コハク酸の脱水反応でも無水コハク酸を得ることが可能です。コハク酸を加熱し、無水酢酸、リン酸ペンタオキシドなどの適切な脱水剤を加えることで、水分子が除去され、無水コハク酸が生成されます。
純化方法Crystallise the anhydride from redistilled acetic anhydride or CHCl3, then filter, wash with diethyl ether and dry it in a vacuum. [Beilstein 17 H 606, 17 V 6.]
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