아스피린

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아스피린 MSDS

• Acetylsalicylic acid

아스피린 화학적 특성, 용도, 생산

• 아스피린은 무엇인가요?

  아스피린(aspirin)은 아세틸 살리실산(acetylsalicylic acid, ASA)이라고도 하며 살리실산이라는 물질에서 유래되었다. 살리실산은 버드나무 껍질에 함유되어 있으며 기원전(BC) 1,500년쯤의 기록이 있을 만큼 오랜 시간 사용되어 왔다. 근대에 버드나무 껍질 추출물에서 살리실산을 추출하여, 해열, 진통제로 사용하였으나 부작용이심각하여 사용에 어려움이 많았다. 1897년 독일 바이엘사는 살리실산의 부작용을 감소시킨 아세틸 살리실산(아스피린)을 합성하였다. 아스피린은 1899년 해열 진통제로 특허가 등록되어 지금까지도 널리 사용되고 있다.

• 성상

  이 약은 흰색의 결정, 알갱이 또는 가루로 냄새는 없고 약간 신맛이 있다.
  이 약은 에탄올(95) 또는 아세톤에 잘 녹고 에테르에 녹으며 물에는 녹기 어렵다.
  이 약은 수산화나트륨시액 또는 탄산나트륨시액에 녹는다.
  이 약은 습기있는 공기 중에서 천천히 가수분해되어 살리실산 및 아세트산으로 된다.
  융점 : 약 136 ℃ (미리 욕액을 130 ℃로 가열하여 둔다).

• 용도

  아스피린은 프로트롬빈 생성 억제를 통한 혈소판 제거 반응을 하기 때문에 항응고 작용을 하여 혈전을 예방 할 수 있다. 이 때문에 급성 심장마비에 사용한다.

• 용도

  아스피린 는 해 열 이며 류 마티스는 dysmenorrhea, 발열, 두통, 관절 통, acticerheumatism, 그리고 류 마티스 관절염, 치 통 완화에 사용 및 만들기에 대 한 원료 항 발암 물질.

• 개요

  Acetylsalicylic acid is a white crystalline powder commonly known by its common name as aspirin or ASA. Aspirin is the most widely used medication in the world.

• 화학적 성질

  Acetylsalicylic acid is a white crystalline solid with a slightly bitter taste. It is odorless but hydrolyzes in moist air to give an acetic acid odor

• 물리적 성질

  Acetylsalicylic acid, an acetyl derivative of salicylic acid, is a white, crystalline, weakly acidic substance, with a melting point of 136 °C , and a boiling point of 140 °C .
  Synthesis
  The synthesis of aspirin is classified as an esterification reaction. Salicylic acid is treated with acetic anhydride, an acid derivative, causing a chemical reaction that turns salicylic acid's hydroxyl group into an ester group (R-OH → R-OCOCH₃). This process yields aspirin and acetic acid, which is considered a byproduct of this reaction.
  Polymorphism
  Polymorphism, or the ability of a substance to form more than one crystal structure, is important in the development of pharmaceutical ingredients. Many drugs are receiving regulatory approval for only a single crystal form or polymorph. For a long time, only one crystal structure for aspirin was known. That aspirin might have a second crystalline form was suspected since the 1960s. The elusive second polymorph was first discovered by Vishweshwar and coworkers in 2005 , and fine structural details were given by Bond et al. .

• 역사

  The use of Acetylsalicylic acid goes back thousands of years, and there are numerous accounts of the medicinal properties of plants from the Salix (willow) and Myrtaceae (Myrtle) families. Writings from ancient civilizations indicate the use of willow bark in Mesopotamia and myrtle leaves in Egypt as medicines existing several thousand years b.c.e. Hippocrates (460–377 b.c.e. ) and the ancient Greeks used powdered willow bark and leaves to reduce fever (antipyretic) and as a pain reliever (analgesic). Willow and oil of wintergreen was used as medications by native Americans.
  The chemical responsible for the medicinal properties in willow and oil of wintergreen are forms of salicylates, a general name to describe compounds containing the general structure of salicylic acid. Willows (genus Salix) contain salicin and oil of wintergreen contains methyl salicylate. Although the use of willow bark and oil of wintergreen as an accepted antipyretic and analgesic has occurred for at least 2,000 years, by the 19th century medicines were starting to be synthesized in chemical laboratories.

• 용도

  Acetylsalicylic acid is the prototypical analgesic used in the treatment of mild to moderate pain. Acts as an inhibitor of cyclooxygenase which results in the inhibition of the biosynthesis of prostaglandins. Acetylsalicylic acid also inhibits platelet aggregation and is used in the prevention of arterial and venous thrombosis. Along with sodium salicylate (sc-3520), aspirin has been shown to block the long terminal repeat from the human immunodeficiency virus and the Ig κ enhancer from NFκB dependent transcription.

• Indications

  Acetylsalicylic acid is available as capsules, tablets, enteric-coated tablets (Ecotrin), timed-release tablets (ZORprin), buffered tablets (Ascriptin, Bufferin), and as rectal suppositories. Sodium salicylate is available generically. Other salicylates include choline salicylate (Arthropan), choline magnesium trisalicylate (Trilisate), and magnesium salicylate (Momentum).

• 정의

  ChEBI: A member of the class of benzoic acids that is salicylic acid in which the hydrogen that is attached to the phenolic hydroxy group has been replaced by an acetoxy group. A non-steroidal anti-inflammatory drug with moA cyclooxygenase inhibitor activity.

• World Health Organization (WHO)

  Acetylsalicylic acid, a nonsteroidal anti-inflammatory, analgesic and antipyretic agent, was introduced into medicine in 1899 and has since been widely available in over-the-counter preparations. Recent studies carried out in the USA have shown an association between acetylsalicylic acid consumption in children and the development of Reye's syndrome (a rare condition characterized by a combination of encephalopathy and liver disorder and usually preceded by an acute viral illness, such as influenza, diarrhoea, or chickenpox). Many drug regulatory authorities have acted to caution against the use of the drug in children and young adults with febrile conditions. Even within this group the risk of exposure is remote and has been estimated to be of the order of 1.5 per million. This warning also concerns products containing other salicylates. The new indication of acetylsalicylic acid - prophylaxis of myocardial infarction due to its antithrombotic effect - requires loneterm use and may lead to serious adverse reactions, including cerebral haemorrhage. Acetylsalicylic acid retains a valuable place in medicine and remains in the WHO Model List of Essential Drugs.

• Biological Functions

  Acetylsalicylic acid is one of the most important NSAIDs because it decreases pain at predominantly peripheral sites with little cortical interaction and thus has few CNS effects. The prototypical COX-2 inhibitors are celecoxib (Celebrex) and its chemical cousin, rofecoxib (Vioxx). In addition to a role in inflammatory processes,COX-2 seems to play a role in colon cancer and Alzheimer’s disease, providing potential additional uses for COX-2-selective drugs.

• 원료

  Acetylsalicylic acid is rapidly absorbed in the stomach and quickly degraded by plasma cholinesterases (half-life, 15–20 min). A once-daily dose of 160 mg of aspirin, which is much lower than dosages needed for its anti-inflammatory/analgesic actions, is sufficient to completely inactivate platelet COX-1 irreversibly. Higher doses of aspirin only contribute to its side effects, especially internal bleeding and upper gastrointestinal irritations.

• 일반 설명

  Acetylsalicylic acid (Aspro, Empirin), was introducedinto medicine by Dreser in 1899.Acetylsalicylic acid occurs as white crystals or as a white crystallinepowder and must be kept under dry conditions. It is not advisableto keep Acetylsalicylic acid products in the kitchen or bathroomcabinets, because Acetylsalicylic acid is slowly decomposed into aceticand salicylic acids in the presence of heat and moisture.Several proprietaries (e.g., Bufferin) use compounds such as sodium bicarbonate, aluminum glycinate, sodium citrate,aluminum hydroxide, or magnesium trisilicate to counteractAcetylsalicylic acid’s acidic property. One of the better antacids is dihydroxyaluminumaminoacetate. Acetylsalicylic acid is unusually effectivewhen prescribed with calcium glutamate. The more stable,nonirritant calcium acetylsalicylate is formed, and theglutamate portion (glutamic acid) maintains a pH of 3.5 to5. Practically all salts of Acetylsalicylic acid, except those of aluminumand calcium, are unstable for pharmaceutical use. Thesesalts appear to have fewer undesirable side effects and induceanalgesia faster than Acetylsalicylic acid. A timed release preparationof Acetylsalicylic acid is available. It does not appear to offer anyadvantages over Acetylsalicylic acid, except for bedtime dosage.

• 공기와 물의 반응

  Slowly hydrolyzes in moist air. Has been involved in dust cloud explosions. Water insoluble. Solution in water is acid to methyl red indicator.

• 반응 프로필

  The active ingredient in common aspirin. Incompatible with oxidizers and strong acids. Also incompatible with strong bases. May react with water or nucleophiles (e.g. amines and hydroxy groups). May also react with acetanilide, amidopyrine, phenazone, hexamine, iron salts, phenobarbitone sodium, quinine salts, potassium and sodium iodides, alkali hydroxides, carbonates, stearates and paracetanol.

• 위험도

  An allergen; may cause local bleeding espe- cially of the gums; 10-g dose may be fatal. May cause excessive biosynthesis of prostaglandins. Dust dispersed in air is serious explosion risk. Skin and eye irritant.

• 화재위험

  Acetylsalicylic acid is combustible.

• Pharmacology

  Acetylsalicylic acid is a weak acid, and very little of it is ionized in the stomach after oral administration. Acetylsalicylic acid is poorly soluble in the acidic conditions of the stomach, which can delay absorption of high doses for eight to 24 hours. The increased pH and larger surface area of the small intestine causes aspirin to be absorbed rapidly there, which in turn allows more of the salicylate to dissolve. Owing to the issue of solubility, however, aspirin is absorbed much more slowly during overdose, and plasma concentrations can continue to rise for up to 24 hours after ingestion.

• 부작용

  ContraindicationsAcetylsalicylic acid should not be taken by people who are allergic to ibuprofen or naproxen , or who have salicylate intolerance[70][71] or a more generalized drug intolerance to NSAIDs, and caution should be exercised in those with asthma or NSAID - precipitated bronchospasm.GastrointestinalAcetylsalicylic acid use has been shown to increase the risk of gastrointestinal bleeding . Although some enteric-coated formulations of Acetylsalicylic acid are advertised as being "gentle to the stomach", in one study, enteric coating did not seem to reduce this risk. Combining Acetylsalicylic acid with other NSAIDs has also been shown to further increase this risk.Central effectsLarge doses of salicylate, a metabolite of Acetylsalicylic acid, have been proposed to cause tinnitus (ringing in the ears) based on experiments in rats, via the action on arachidonic acid and NMDA receptors cascade.Reye syndrome Reye syndrome, a rare but severe illness characterized by acute encephalopathy and fatty liver, can occur when children or adolescents are given Acetylsalicylic acid for a fever or other illnesses or infections.

• Safety Profile

  Poison by ingestion, intraperitoneal, and possibly other routes. Human systemic effects by ingestion: acute pulmonary edema, body temperature increase, changes in kidney tubules, coma, constipation, dehydration, hematuria, hepatitis, nausea or vomiting, respiratory stimulation, somnolence, tinnitus, decreased urine volume. Implicated in aplastic anemia. A 10 gram dose to an adult may be fatal. A human teratogen. Human reproductive effects by ingestion and possibly other routes: menstrual cycle changes, parturition, various effects on newborn including Apgar score, developmental abnormalities of the cardlovascular and respiratory systems. Experimental animal reproductive effects. Human mutation data reported. An allergen; skin contact, inhalation, or ingestion can cause asthma, sneezing, irritation of eyes and nose, hves, and eczema. Combustible when exposed to heat or flame. When heated to decomposition it emits acrid smoke and fumes.

• 잠재적 노출

  Used as an over-the counter and proprietary pharmaceutical and veterinary drug. Those engagedin manufacture of aspirin or, more likely, in its consumption in widespread use as an analgesic, antipyretic, and antiinflammatory agent

• 환경귀착

  The toxicity of Acetylsalicylic acid is multifactorial. Gastrointestinal symptoms such as nausea, vomiting, and abdominal pain occur as a result of both local gastric irritation and stimulation of the medullary chemoreceptor trigger zone. Salicylates directly stimulate the respiratory drive in the brain stem, leading to hyperventilation and respiratory alkalosis. Anion gap metabolic acidosis occurs from a buildup of organic acids as well as the uncoupling of oxidative phosphorylation, which results in an imbalance in ATP consumption and production, resulting in a net buildup of hydrogen ions. Therefore, Acetylsalicylic acid often causes a mixed acid–base status. Furthermore, the uncoupling of oxidative phosphorylation results in failure to produce ATP despite increased oxygen utilization, which leads to heat production and hyperthermia. Acetylsalicylic acid interferes with glucose metabolism and gluconeogenesis, and can cause profound decreases in cerebrospinal fluid glucose concentrations despite normal blood glucose concentrations.

• 운송 방법

  UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required

• Purification Methods

  Crystallise aspirin twice from toluene, wash it with cyclohexane and dry it at 60o under vacuum for several hours [Davis & Hetzer J Res Nat Bur Stand 60 569 1958]. It has been recrystallised from isopropanol and from diethyl ether/pet ether (b 40-60o). It crystallises from EtOH (m 143-144o), *C6H6 (m 143o), hexane (m 115o and 128o), octane (m 121o), and has m 110o after sublimation. It has pK2 6 3.69(H2O), 4.15(20% aqueous EtOH), 4.47(30% aqueous EtOH) and 4.94(40% aqueous EtOH). It is an analgesic. [Beilstein 10 H 67, 10 II 41, 10 III 102, 10 IV 138.]

• 비 호환성

  Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, carbonates, moisture. Dust dispersed in air is explosive

• 폐기물 처리

  May be flushed to sewer with large volumes of water.

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