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重要文件

1.08178

Supelco

三氟乙酸

for protein sequence analysis

同義詞:

TFA

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About This Item

線性公式:
CF3COOH
CAS號碼:
分子量::
114.02
Beilstein:
742035
MDL號碼:
分類程式碼代碼:
12352106
酶委員會索引編號:
200-929-3
NACRES:
NA.21
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蒸汽密度

3.9 (vs air)

品質等級

蒸汽壓力

97.5 mmHg ( 20 °C)

化驗

≥99.7% (acidimetric)

形狀

liquid

雜質

≤0.02% Water (Karl Fischer)

折射率

n20/D 1.3 (lit.)

pH值

1 (10 g/L in H2O)

bp

72.4 °C (lit.)

mp

−15.4 °C (lit.)

溶解度

soluble 10 g/mL

密度

1.489 g/mL at 20 °C (lit.)

儲存溫度

2-30°C

SMILES 字串

OC(C(F)(F)F)=O

InChI

1S/C2HF3O2/c3-2(4,5)1(6)7/h(H,6,7)

InChI 密鑰

DTQVDTLACAAQTR-UHFFFAOYSA-N

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應用

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).[1]

分析報告

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 %

象形圖

CorrosionExclamation mark

訊號詞

Danger

危險聲明

危險分類

Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1A

儲存類別代碼

8A - Combustible, corrosive hazardous materials

水污染物質分類(WGK)

WGK 2

閃點(°F)

212.0 °F - Pensky-Martens closed cup

閃點(°C)

> 100 °C - Pensky-Martens closed cup


分析證明 (COA)

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Y Chen et al.
Journal of chromatography. A, 1043(1), 9-18 (2004-08-20)
Trifluoroacetic acid (TFA) remains the dominant mobile phase additive for reversed-phase high-performance liquid chromatography (RP-HPLC) of peptides after more than two decades since its introduction to this field. Generally, TFA has been employed in a concentration range of 0.05-0.1% (6.5-13

Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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