1,2-プロパンジオン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H290：金属腐食のおそれ

  H317：アレルギー性皮膚反応を起こすおそれ

  H318：重篤な眼の損傷

  H341：遺伝性疾患のおそれの疑い

• 注意書き

  P202：全ての安全注意を読み理解するまで取り扱わないこ と。

  P234：他の容器に移し替えないこと。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P302+P352：皮膚に付着した場合：多量の水と石鹸で洗うこと。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

  P308+P313：暴露または暴露の懸念がある場合：医師の診断/手当てを 受けること。

1,2-プロパンジオン 価格

MSDS Information

• Pyruvaldehyde

1,2-プロパンジオン 化学特性,用途語,生産方法

• 用途

  本物質の主な用途は、中間物、有機化学製品用（洗剤等、繊維用、土壌改良材）、その他製品用（その他）とされているほか、繊維処理剤、土壌硬化剤、紙仕上剤、鋳砂添加剤、医薬、香料原料、消臭剤とされている。

• 説明

  Methylglyoxal (MG) is a highly reactive a-dicarbonyl compound that is primarily generated endogenously during glycolytic pathways (glucose and fructose metabolism) in cells and exogenously due to autoxidation of sugar, degradation of lipids, and fermentation during food and drink processing. Methylglyoxal polymerizes readily; it is hygroscopic and incompatible with strong oxidizing agents and bases. Methylglyoxal may be present as a free molecule in the diet or bound to biological materials, such as proteins, and as advanced glycation end products (AGEs), which are poorly absorbed. Methylglyoxal has been indicated in pathological events associated with hyperglycemia in both type 1 and type 2 diabetes and in other diabetic complications as either a direct toxin or as a precursor for AGEs. In animal studies, MG has been shown to induce tumorigenesis, but has also been reported as a tumoristatic agent. Methylglyoxal has been identified as the dominant antibacterial constituent of manuka honey.

• 化学的特性

  clear yellow to yellow-brown solution

• 天然物の起源

  Reported found in the dry distillate of Manilla copal. Also reported found in apple juice, orange juice, celery root, rutabaga, tomato, wheaten bread, white bread, roasted and raw turkey, cognac, roasted barley, beer, cocoa, coffee and roasted pecans.

• 使用

  Methylglyoxal solution has been used:
  
  • to assess glyoxalase 1 (GLO1) enzymatic activity
  • as an advanced glycation end (AGE) forming agent for the preparation of albumin in vitro
  • to regulate anxiety like behavior in mice
  • to induce peritoneal fibrosis in rats
  • to study the chromatographic retention characteristics of organic chemicals and metal DNA adducts
  • for intraplantar injection in mice to investigate peripheral and central components of methylglyoxal (MG)-transient receptor potential ankyrin 1 (TRPA1)-adenylyl cyclase 1 isoform (AC1) pathway

• 製造方法

  By distilling a dilute solution of dihydroxyacetone from calcium carbonate; by oxidation of acetone with selenium dioxide; by heating dihydroxy acetone with phosphorus pentoxide; by warming isonitroso acetone with diluted H2SO4.

• 定義

  ChEBI: A 2-oxo aldehyde derived from propanal.

• 一般的な説明

  Clear yellow slightly viscous liquid with a pungent odor. Yellowish-green vapors. Faintly acidic to litmus.

• 空気と水の反応

  Water soluble.

• 反応プロフィール

  Methylglyoxal polymerizes readily. Methylglyoxal is hygroscopic. Methylglyoxal is incompatible with strong oxidizing agents and bases. Methylglyoxal is an aldehyde. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.

• 火災危険

  Literature sources indicate that Methylglyoxal is nonflammable.

• 環境運命予測

  Methylglyoxal production and use as a chemical intermediate and flavoring agent may result in its release to the environment through various waste streams. If released into water, MG is not expected to adsorb to suspended solids and sediment based on the estimated Koc. Volatilization from water surfaces is not expected to be an important fate process based upon the estimated Henry’s Law constant. If released to soil, MG is expected to have very high mobility based upon an estimated Koc of 1 determined from the structure estimation method. Hydrolysis is not expected to be an important environmental fate process since this compound lacks functional groups that hydrolyze under environmental conditions.
  Methylglyoxal serves as a substrate for the isozymes E1, E2, and E3 of human aldehyde dehydrogenase. Oxidation of MG by these isozymes generated pyruvate. Methylglyoxal is a partially oxidized compound obtained from the tropospheric oxidation of numerous hydrocarbons, of both biogenic and anthropogenic origin. If released to the air, an estimated vapor pressure of 27 mm Hg at 25 ℃ indicates MG will exist solely as a vapor in the atmosphere. Vapor-phase MG will be degraded in the atmosphere by reaction with photochemically produced hydroxyl radicals; the half-life for this reaction in air is estimated to be 30 h. Methylglyoxal absorbs light at wavelengths >290 nm and, therefore, is susceptible to direct photolysis by sunlight; half-lives of 2–4 h have been reported.

• 純化方法

  Commercial 30% (w/v) aqueous solution is diluted to about 10% and distilled twice, taking the fraction boiling below 50o/20mm Hg. (This treatment does not remove lactic acid). [Beilstein 1 IV 3631.]

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