1.08178
三氟乙酸
for protein sequence analysis
别名:
TFA
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关于此项目
线性分子式:
CF3COOH
化学文摘社编号:
分子量:
114.02
UNSPSC Code:
12352106
NACRES:
NA.21
EC Index Number:
200-929-3
MDL number:
Beilstein/REAXYS Number:
742035
Assay:
≥99.7% (acidimetric)
Form:
liquid
vapor density
3.9 (vs air)
Quality Segment
vapor pressure
97.5 mmHg ( 20 °C)
assay
≥99.7% (acidimetric)
form
liquid
impurities
≤0.02% Water (Karl Fischer)
refractive index
n
pH
1 (10 g/L in H2O)
bp
72.4 °C (lit.)
mp
−15.4 °C (lit.)
solubility
soluble 10 g/mL
density
1.489 g/mL at 20 °C (lit.)
storage temp.
2-30°C
SMILES string
OC(C(F)(F)F)=O
InChI
1S/C2HF3O2/c3-2(4,5)1(6)7/h(H,6,7)
InChI key
DTQVDTLACAAQTR-UHFFFAOYSA-N
Application
Trifluoroacetic acid (TFA) can be used as an ion-pairing agent in a reverse-phase HPLC system to separate peptides because it enhances peak resolution. It also has low absorption detection wavelengths and is relatively volatile and can be easily removed. For the majority of peptide separations, TFA has been used at concentrations ranging from 0.05 to 0.1%(6.5-13 mM).
Analysis Note
Assay (acidimetric): ≥ 99.7 %
Identity (IR-spectrum): passes test
Density (d 20 °C/20 °C): about 1.53
Boiling point: about 72 °C
Water (according to Karl Fischer): ≤ 0.02 %
Identity (IR-spectrum): passes test
Density (d 20 °C/20 °C): about 1.53
Boiling point: about 72 °C
Water (according to Karl Fischer): ≤ 0.02 %
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存储类别
8A - Combustible corrosive hazardous materials
signalword
Danger
supp_hazards
hcodes
Hazard Classifications
Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Repr. 2 - Skin Corr. 1A