Merck
所有图片(2)

文件

P1386

Sigma-Aldrich

丙酸

≥99.5%

所有图片(2)
别名:
Propanoic acid, Propanyl acid, 初油酸
线性分子式:
CH3CH2COOH
CAS号:
79-09-4
分子量:
74.08
Beilstein:
506071
EC 号:
201-176-3
MDL编号:
MFCD00002756
eCl@ss:
39021305
PubChem化学物质编号:
329820094
NACRES:
NA.21

蒸汽密度

2.55 (vs air)

质量水平

200

蒸汽压

2.4 mmHg ( 20 °C)

检测方案

≥99.5%

自燃温度

955 °F

expl. lim.

12.1 %

杂质

≤0.25% water (Karl Fischer)

颜色

≤10, APHA:

折射率

n20/D 1.386 (lit.)

bp

141 °C (lit.)

mp

−24-−23 °C (lit.)

密度

0.993 g/mL at 25 °C (lit.)

SMILES string

CCC(O)=O

InChI

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

InChI key

XBDQKXXYIPTUBI-UHFFFAOYSA-N

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此商品
P55614029071572208
Propionic acid ≥99.5%

Sigma-Aldrich

P1386

丙酸

Propionic acid BioReagent, suitable for insect cell culture, ~99%

Sigma-Aldrich

P5561

丙酸

Propionic acid ACS reagent, ≥99.5%

Sigma-Aldrich

402907

丙酸

Propionic acid United States Pharmacopeia (USP) Reference Standard

USP

1572208

丙酸

vapor pressure

2.4 mmHg ( 20 °C)

vapor pressure

2.4 mmHg ( 20 °C)

vapor pressure

2.4 mmHg ( 20 °C)

vapor pressure

2.4 mmHg ( 20 °C)

assay

≥99.5%

assay

~99%

assay

≥99.5%

assay

-

impurities

≤0.25% water (Karl Fischer)

impurities

-

impurities

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

impurities

-

refractive index

n20/D 1.386 (lit.)

refractive index

n20/D 1.386 (lit.)

refractive index

n20/D 1.386 (lit.)

refractive index

n20/D 1.386 (lit.)

bp

141 °C (lit.)

bp

141 °C (lit.)

bp

141 °C (lit.)

bp

141 °C (lit.)

一般描述

丙酸（PA）是一种天然羧酸，它在纯态下是一种无色的腐蚀性液体，具有难闻的气味。它可与水混溶。工业上以羰基镍作为催化剂，通过乙烯的加氢羧化作用制备丙酸。已有研究发现PA可减少食物摄入量、降低血浆和肝脏的脂肪酸含量、改善组织胰岛素敏感性并发挥免疫抑制作用。丙酸是一种出色的原材料，因为它稳定、廉价且安全，甚至可以用作食品添加剂。

警示用语：

Danger

危险声明

H226 - H314 - H335

危险分类

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

靶器官

Respiratory system

储存分类代码

3 - Flammable liquids

WGK

WGK 1

闪点(F)

129.2 °F - closed cup

闪点(C)

54 °C - closed cup

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Cell reports, 28(10), 2594-2607 (2019-09-05)
During evolution, organisms have acquired variable feeding habits. Some species are nutritional generalists that adapt to various food resources, while others are specialists, feeding on specific resources. However, much remains to be discovered about how generalists adapt to diversified diets.
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The evolution of embryological development has long been characterized by deep conservation. In animal development, the phylotypic stage in mid-embryogenesis is more conserved than either early or late stages among species within the same phylum. Hypotheses to explain this hourglass
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Natural genetic variation affects circadian rhythms across the evolutionary tree, but the underlying molecular mechanisms are poorly understood. We investigated population-level, molecular circadian clock variation by generating >700 tissue-specific transcriptomes of Drosophila melanogaster (w1118 ) and 141 Drosophila Genetic Reference
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