402907

Propionic acid

ACS reagent, ≥99.5%

• 동의어(들): Acid C₃, Propanoic acid, Propanyl acid
• Linear Formula: CH₃CH₂COOH
• CAS Number: 79-09-4
• Molecular Weight: 74.08
• Beilstein: 506071
• EC Number: 201-176-3
• MDL number: MFCD00002756
• UNSPSC 코드: 12352100
• eCl@ss: 39021305
• PubChem Substance ID: 24865136
• NACRES: NA.21

속성

• Grade: ACS reagent
• Quality Level: 200
• vapor density: 2.55 (vs air)
• vapor pressure: 2.4 mmHg ( 20 °C)
• 분석: ≥99.5%
• 형태: liquid
• autoignition temp.: 955 °F
• expl. lim.: 12.1 %
• 분석물 화학적 분류: amino acids
• 불순물: ≤0.002% Carbonyl compounds; ≤0.10% Readily oxidizable substances (as HCOOH); ≤0.15% water
• 증발 잔류물: ≤0.01%
• 색상: APHA: ≤20
• refractive index: n20/D 1.386 (lit.)
• bp: 141 °C (lit.)
• mp: −24-−23 °C (lit.)
• solubility: H₂O: soluble
• density: 0.993 g/mL at 25 °C (lit.)
• 양이온 미량물: heavy metals (as Pb): ≤0.001%
• SMILES string: CCC(O)=O
• InChI: 1S/C3H6O2/c1-2-3(4)5/h2H2,1H3,(H,4,5)
• InChI key: XBDQKXXYIPTUBI-UHFFFAOYSA-N

설명

일반 설명

Propionic acid (PA) also known as propanoic acid is a short chain fatty acid mainly used as food preservative. It is one of the main metabolic end product formed during the fermentation of undigested food in the colon by the microbiota. Its manufacture by glycerol/glucose co-fermentation using Propionibacterium acidipropionici has been reported. Crystal structure study reveals that PA crystals are monoclinic with space group P2₁/c.

Propionic acid (PA) is a naturally occurring carboxylic acid, which in its pure state exists as a colorless corrosive liquid with an unpleasant odor. It is miscible in water. Industrially it is produced by hydrocarboxylation of ethylene in presence nickel carbonyl as a catalyst. PA has been found to reduce food intake, lower the fatty acids content in plasma and liver, might improve tissue insulin sensitivity and exerts immunosuppressive actions. Propionic acid is an excellent raw material as it is stable, cheap and safe and can even be used as a food additive.

애플리케이션

Propionic acid may be used to alter limestone in order to increase its ability of CO₂ uptake.

안전성 정보

• 픽토그램: GHS02,GHS05,GHS07
• 신호어: Danger
• 유해 및 위험 성명서: H226,H314,H335
• 예방조치 성명서: P210 - P233 - P240 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B - STOT SE 3
• 표적 기관: Respiratory system
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point (°F): 129.2 °F - closed cup
• Flash Point (°C): 54 °C - closed cup
• 개인 보호 장비: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter