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Principaux documents

T6399

Sigma-Aldrich

Trichloroacetic acid

ACS reagent, ≥99.0%

Synonyme(s) :

TCA

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About This Item

Formule linéaire :
Cl3CCOOH
Numéro CAS:
Poids moléculaire :
163.39
Beilstein:
970119
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352100
ID de substance PubChem :
Nomenclature NACRES :
NA.21
Le tarif et la disponibilité ne sont pas disponibles actuellement.

Qualité

ACS reagent

Niveau de qualité

Densité de vapeur

<1 (vs air)

Pression de vapeur

1 mmHg ( 51 °C)

Essai

≥99.0%

Impuretés

Substances darkened by sulfuric acid, passes test
≤0.01% insoluble matter

Résidus de calcination

≤0.03%

Indice de réfraction

n20/D 1.62 (lit.)

pb

196 °C (lit.)

Pf

54-58 °C (lit.)

Solubilité

H2O: 1 g/10 mL

Densité

1.62 g/mL at 25 °C (lit.)

Traces d'anions

chloride (Cl-): ≤0.002%
nitrate (NO3-): ≤0.002%
phosphate (PO43-): ≤5 ppm
sulfate (SO42-): ≤0.02%

Traces de cations

Fe: ≤0.001%
heavy metals (as Pb): ≤0.002%

Groupe fonctionnel

carboxylic acid
chloro

Température de stockage

2-8°C

Chaîne SMILES 

OC(=O)C(Cl)(Cl)Cl

InChI

1S/C2HCl3O2/c3-2(4,5)1(6)7/h(H,6,7)

Clé InChI

YNJBWRMUSHSURL-UHFFFAOYSA-N

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Application

Utilisé de façon traditionnelle pour précipiter les protéines. A été utilisé pour déterminer la concentration en protéine par précipitation quantitative. Utilisé comme décalcifiant et fixateur en microscopie.
  • Trichloroacetic acid has been used for the precipitation of sLRP (soluble circulating low density lipoprotein receptor-related protein-1) isolated from plasma.[1]
  • It has been used for the extraction of ascorbic acid from plant samples. It has also been used for the preparation of ascorbate standards for ascorbate assay.[2]
  • It has been used for the precipitation of IMAC (immobilized metal ion affinity chromatography)-isolated phosphoproteins.[3]

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Pictogrammes

CorrosionEnvironment

Mention d'avertissement

Danger

Mentions de danger

Classification des risques

Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1A

Code de la classe de stockage

8B - Non-combustible corrosive hazardous materials

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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Certificats d'analyse (COA)

Lot/Batch Number

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Casein Kinase 2 (CK2)-mediated Phosphorylation of Hsp90? as a Novel Mechanism of Rifampin-induced MDR1 Expression.
Kim SW et al.
The Journal of Biological Chemistry, 290, 17029-17029 (2015)
Measurement of reduced, oxidized and total ascorbate content in plants.
Gillespie KM and Ainsworth EA
Nature Protocols, 2, 871-871 (2007)
Impaired lipoprotein receptor-mediated peripheral binding of plasma amyloid-? is an early biomarker for mild cognitive impairment preceding Alzheimer's disease.
Sagare AP et al.
Journal of Alzheimer'S Disease, 24, 25-25 (2011)
Philip D Campbell et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 34(44), 14717-14732 (2014-10-31)
Mutations in Kinesin proteins (Kifs) are linked to various neurological diseases, but the specific and redundant functions of the vertebrate Kifs are incompletely understood. For example, Kif5A, but not other Kinesin-1 heavy-chain family members, is implicated in Charcot-Marie-Tooth disease (CMT)
Seokjo Kang et al.
Journal of Alzheimer's disease : JAD, 70(3), 667-680 (2019-07-01)
Increased levels of total tau (t-tau) and hyperphosphorylated tau (p-tau) proteins in the cerebrospinal fluid of Alzheimer's disease (AD) patients are well documented and strongly correlate with AD pathology. Recent studies have further shown that human tau can be released

Questions

1–4 of 4 Questions  
  1. The answer stated 7 month ago says that "A 100% (w/v) solution of TCA can be made by the addition of 227 ml of water to 500 g of TCA." The powder purity being 99%, why wouldn't it be 100g of TCA for 100 mL of water for a 100% w/v solution?

    1 answer
    1. The formula "A 100% (w/v) solution of TCA can be made by the addition of 227 mL of water to 500 g of TCA" is sourced from Molecular Cloning: A Laboratory Manual, 3rd ed., Sambrook, J. F., et al., Cold Spring Harbor Laboratory Press (Cold Spring Harbor, NY: 2001), p. A1.29.
      Solutions should be prepared accurately at any given temperature by weighing into a volumetric flask, dissolving, and then bringing to the specified volume. The Molecular Cloning application may not have required an accurate solution. Volumes prepared using graduated cylinders are less accurate than those prepared using a To Contain class A volumetric flask, even if densities have been established. Unless specifically following the Molecular Cloning paper, it is best to prepare the solution using the established and correct method.

      Helpful?

  2. 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

      Helpful?

  3. 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

      Helpful?

  4. What are the recommended solubility and storage conditions for the trichloroacetic acid (TCA) product with CAS number 76-03-9?

    1 answer
    1. A 100% (w/v) solution of TCA can be made by the addition of 227 ml of water to 500 g of TCA. The resulting clear solution will have a density of approximately 1.45 g/ml. Do not use plastic dishes and containers. Solution storage temperature 2-8 °C

      Helpful?

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