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Merck

402907

Sigma-Aldrich

丙酸

ACS reagent, ≥99.5%

别名:

Propanoic acid, Propanyl acid, 初油酸

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About This Item

线性分子式:
CH3CH2COOH
CAS号:
分子量:
74.08
Beilstein:
506071
EC號碼:
MDL號碼:
分類程式碼代碼:
12352100
eCl@ss:
39021305
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent

品質等級

蒸汽密度

2.55 (vs air)

蒸汽壓力

2.4 mmHg ( 20 °C)

化驗

≥99.5%

形狀

liquid

自燃溫度

955 °F

expl. lim.

12.1 %

分析物化學類別

amino acids

雜質

≤0.002% Carbonyl compounds
≤0.10% Readily oxidizable substances (as HCOOH)
≤0.15% water

蒸發殘留物

≤0.01%

顏色

APHA: ≤20

折射率

n20/D 1.386 (lit.)

bp

141 °C (lit.)

mp

−24-−23 °C (lit.)

溶解度

H2O: soluble

密度

0.993 g/mL at 25 °C (lit.)

正離子痕跡

heavy metals (as Pb): ≤0.001%

SMILES 字串

CCC(O)=O

InChI

1S/C3H6O2/c1-2-3(4)5/h2H2,1H3,(H,4,5)

InChI 密鑰

XBDQKXXYIPTUBI-UHFFFAOYSA-N

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一般說明

丙酸(PA)也被叫做初油酸,是一种短链脂肪酸,主要用于食品防腐剂。它是未消化的食物在直肠中被微生物发酵产生的主要代谢末端产物之一。它可以用Propionibacterium acidipropionici甘油/葡萄糖共发酵来生产。晶体结构研究表明PA晶体是单斜晶体,有空间基团P21/c
丙酸(PA)是一种天然羧酸,它的天然状态是一种无色腐蚀液体,有难闻的气味。它易混合于水。工业上在羰基镍作为催化剂存在情况下,乙烯氢羧基化生成丙酸。PA被发现能够降低食物摄入,降低血浆和肝脏中的脂肪酸,提高组织胰岛素灵敏度,抑制免疫反应。丙酸是一种良好的原材料,它稳定,便宜,安全,可以用作食品添加剂。

應用

丙酸可以用来改变石灰石,提高它吸收CO2的能力。

訊號詞

Danger

危險聲明

危險分類

Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

3 - Flammable liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

129.2 °F - closed cup

閃點(°C)

54 °C - closed cup

個人防護裝備

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Recent evidence suggests that a variety of environmental factors, including dietary and gastrointestinal agents, may contribute to autism spectrum disorders (ASD). Here we administered propionic acid (PPA), a short chain fatty acid that is used as a food preservative and
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Cosubstrates fermentation is such an effective strategy for increasing subject metabolic products that it could be available and studied in propionic acid production, using glycerol and glucose as carbon resources. The effects of glycerol, glucose, and their mixtures on the
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