27221
乙酸
glacial, puriss., 99-100%
别名:
冰乙酸
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关于此项目
线性分子式:
CH3CO2H
化学文摘社编号:
分子量:
60.05
UNSPSC Code:
12352106
NACRES:
NA.21
PubChem Substance ID:
EC Number:
200-580-7
Beilstein/REAXYS Number:
506007
MDL number:
Assay:
99-100%
Form:
liquid
vapor density
2.07 (vs air)
Quality Level
grade
puriss.
assay
99-100%
form
liquid
autoignition temp.
800 °F
expl. lim.
16 %, 92 °F, 4 %, 59 °F
technique(s)
mass spectrometry (MS): suitable
impurities
≤0.0005% heavy metals (as Pb), ≤0.005% non-volatile matter
refractive index
n20/D 1.371 (lit.)
pH
2.5 (20 °C, 50 g/L)
bp
117-118 °C (lit.)
mp
16.2 °C (lit.)
density
1.04 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 mg/kg, sulfate (SO42-): ≤5 mg/kg
cation traces
Fe: ≤5 mg/kg
SMILES string
[F2C(F2C)13F3C]C(O)=O
InChI
1S/C2H4O2/c1-2(3)4/h1H3,(H,3,4)
InChI key
QTBSBXVTEAMEQO-UHFFFAOYSA-N
General description
乙酸是一种有机羧酸。本品为吸湿性液体，有刺激性气味。其无水形式通常称为冰醋酸。在溶液和气相中通过氢键连接形成二聚体。性质为弱酸性。
Application
乙酸被广泛用作各种氧化反应的溶剂。它已被用于电子转移解离 (ETD) 串联质谱 (MS/MS) 分析合成肽。可通过与过氧化氢（30% 过氧化氢）反应制备过氧乙酸（消毒剂）。
Other Notes
货号27221-6X1L的产品即将停产。请订购27221-1L单瓶装，因为其物理参数与上述产品本质相同。
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signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1A
存储类别
3 - Flammable liquids
wgk
WGK 1
flash_point_f
102.2 °F - closed cup
flash_point_c
39 °C - closed cup
法规信息
危险化学品
此项目有
John E P Syka et al.
Proceedings of the National Academy of Sciences of the United States of America, 101(26), 9528-9533 (2004-06-24)
Peptide sequence analysis using a combination of gas-phase ion/ion chemistry and tandem mass spectrometry (MS/MS) is demonstrated. Singly charged anthracene anions transfer an electron to multiply protonated peptides in a radio frequency quadrupole linear ion trap (QLT) and induce fragmentation
Eagleson M.
Concise Encyclopedia Chemistry, 5-5 (1994)
Isabelle Brunet et al.
The Journal of clinical investigation, 124(7), 3230-3240 (2014-06-18)
Autonomic sympathetic nerves innervate peripheral resistance arteries, thereby regulating vascular tone and controlling blood supply to organs. Despite the fundamental importance of blood flow control, how sympathetic arterial innervation develops remains largely unknown. Here, we identified the axon guidance cue
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| 27221-4X5L | 04061837760044 |
| 27221-6X1L | 04061837760051 |
| 27221-1L | 04061826144039 |