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695076

Sigma-Aldrich

甲酸

ACS reagent, ≥96%

线性分子式:
HCOOH
CAS号:
分子量:
46.03
Beilstein:
1209246
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.21

质量水平

200

等级

ACS reagent

蒸汽密度

1.6 (vs air)

蒸汽压

44.8 mmHg ( 20 °C)

测定

≥96%

形式

liquid

自燃温度

1004 °F

expl. lim.

57 %

应用

sample preparation: suitable

折射率

n20/D 1.370 (lit.)

pH值(酸碱度)

2.2 (20 °C, 2.2  g/L)

bp

100-101 °C (lit.)

mp

8.2-8.4 °C (lit.)

溶解性

water: miscible

密度

1.22 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.003%
sulfite (SO32-): passes test

痕量阳离子

Fe: ≤0.001%
NH4+: ≤0.005%
heavy metals (as Pb): ≤0.001%

SMILES string

OC=O

InChI

1S/CH2O2/c2-1-3/h1H,(H,2,3)

InChI key

BDAGIHXWWSANSR-UHFFFAOYSA-N

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一般描述

甲酸是最简单的羧酸。在-50°C条件下,通过单晶X射线衍射技术研究晶体结构 表明它具有带有空间群PNA的正交结构 。通过 ab intio 计算和时间分辨傅里叶变换红外光谱,已对甲酸的光降解进行了研究。其作为直接燃料电池中的燃料方面的用途已有研究。其单体的动量分布已通过电子动量谱(EMS)进行了评估。

包装

100, 500 mL in poly bottle

警示用语:

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1A

补充剂危害

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

闪点(F)

121.1 °F - closed cup

闪点(C)

49.5 °C - closed cup

分析证书

原产地证书 (CofO)

Direct formic acid fuel cells.
Rice C, et al.
Journal of Power Sources, 111(1), 83-89 (2002)
Electron momentum spectroscopy of formic acid.
Nixon KL, et al.
Chemical Physics Letters, 474(1), 23-27 (2009)
The crystal structure of formic acid.
Holtzberg F, et al.
Acta Crystallographica, 6(2), 127-130 (1953)
Photodissociation of formic acid.
Su H, et al.
J. Chem. Phys. , 113(5), 1891-1897 (2000)
Sarela García-Santamarina et al.
Nature protocols, 9(5), 1131-1145 (2014-04-20)
Reversible thiol oxidation of cysteine residues occurs in many intracellular catalytic and signaling processes. Here we describe an optimized protocol, which can be completed in ∼5 d, to unambiguously identify specific cysteine residues that are transiently and reversibly oxidized by...

技术文章

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