Wszystkie zdjęcia(2)

695092

Sigma-Aldrich

Acetic acid

glacial, ACS reagent, ≥99.7%

Synonim(y):
Glacial acetic acid
Wzór liniowy:
CH3CO2H
Numer CAS:
Masa cząsteczkowa:
60.05
Beilstein:
506007
Numer EC:
Numer MDL:
Identyfikator substancji w PubChem:
NACRES:
NA.21

Poziom jakości

200

klasa czystości

ACS reagent

gęstość pary

2.07 (vs air)

ciśnienie pary

11.4 mmHg ( 20 °C)

próba

≥99.7%

forma

liquid

temp. samozapłonu

800 °F

granice wybuchowości

16 %, 92 °F
4 %, 59 °F

technique(s)

mass spectrometry (MS): suitable

zanieczyszczenia

Cr2O72- reducers, passes test
MnO4- reducers, passes test
≤0.0004 meq/g Titr. base
≤0.01% acetic anhydride

pozostałość po odparowaniu

≤0.001%

kolor

APHA: ≤10

współczynnik refrakcji

n20/D 1.371 (lit.)

pH

2.5 (20 °C, 50  g/L)

tw

117-118 °C (lit.)

mp

16.2 °C (lit.)

gęstość

1.049 g/mL at 25 °C (lit.)

ślady anionów

chloride (Cl-): ≤1 ppm
sulfate (SO42-): ≤1 ppm

ślady kationów

Fe: ≤0.2 ppm
heavy metals: ≤0.5 ppm (by ICP)

SMILES string

CC(O)=O

InChI

1S/C2H4O2/c1-2(3)4/h1H3,(H,3,4)

InChI key

QTBSBXVTEAMEQO-UHFFFAOYSA-N

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Opis ogólny

Acetic acid is an organic carboxylic acid. It is a pungent smelling hygroscopic liquid. Glacial acetic acid is the anhydrous acetic acid. It forms dimers linked by hydrogen bonds in solution and gaseous commonly referred as phases. It is weakly acidic in nature.

Zastosowanie

Acetic acid is widely employed as solvent for various oxidation reactions. It may be used in the analysis of synthetic peptides by electron transfer dissociation (ETD) tandem mass spectrometry (MS/MS). It may be used in the preparation of peroxyacetic acid (disinfectant), via reaction with perhydrol (30% hydrogen peroxide).

Opakowanie

100, 4×100 mL in poly bottle
6×500 mL in poly bottle
6×2.5 L in glass bottle
500 mL in glass bottle
2 L in glass bottle
500 mL in poly bottle
2.5 L in poly bottle
6×2.5, 4, 4×4 L in poly bottle
6×500 mL in glass bottle

Inne uwagi

4L and 4X4L are packaged in poly bottles

piktogramy

FlameCorrosion

Hasło ostrzegawcze

Danger

Zwroty wskazujące rodzaj zagrożenia

Klasyfikacja zagrożeń

Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1A

Kod klasy składowania

3 - Flammable liquids

WGK

WGK 1

Temperatura zapłonu °F

102.2 °F

Temperatura zapłonu °C

39 °C

Certyfikat analizy

Świadectwo pochodzenia

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
Katharine Trenholme et al.
Antimicrobial agents and chemotherapy, 58(7), 3666-3678 (2014-04-16)
Therapies to prevent transmission of malaria parasites to the mosquito vector are a vital part of the global malaria elimination agenda. Primaquine is currently the only drug with such activity; however, its use is limited by side effects. The development
Xianbao Deng et al.
The New phytologist, 201(4), 1469-1483 (2013-11-26)
• Chalcone synthase (CHS) is the key enzyme in the first committed step of the flavonoid biosynthetic pathway and catalyzes the stepwise condensation of 4-coumaroyl-CoA and malonyl-CoA to naringenin chalcone. In plants, CHS is often encoded by a small family

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