TWEEN® 20 - Suitable for molecular biology, viscous liquids , CAS No.9005-64-5

CAS: 9005-64-5 Cat. No.: T434505 Formule: C58H114O26(for n = 20) Poids moléculaire: 1228 (for n= 20) Numéro CE: 500-018-3
DISPONIBLE À COMMANDE
GRADE & PURITY Suitable for molecular biology ? Molecular-biology grade — free of nucleases and contaminants that degrade DNA/RNA. Use in cloning, PCR, and nucleic-acid work needing clean reagents. viscous liquids
Synonyms
POE (6) sorbitol monolaurate | Tween(R) 20 | 2-{2-[3,4-bis(2-hydroxyethoxy)oxolan-2-yl]-2-(2-hydroxyethoxy)ethoxy}ethyl dodecanoate | SCHEMBL118527 | Tween 40 (TN) | 1052273-76-3 | 2-(2-(3,4-bis(2-hydroxyethoxy)tetrahydrofuran-2-yl)-2-(2-hydroxyethoxy)eth
Storage
Room temperature
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Size
Allemagne (EU)
USA*
Price
Qty
50ml
T434505-50ml
—
3 En stock
112,72€
100ml
T434505-100ml
—
5 En stock
173,46€
Enter a quantity for the sizes you want to add.
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Why this grade

Suitable for molecular biology, viscous liquids Suitable for molecular biology for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 494 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Vue d’ensemble

ECO TWEEN® 20, also known as Polyoxyethylenesorbitan monolaurate, is a bio-based, nonionic detergent manufactured from a natural fatty acid. This surfactant, derived from natural sources, provides various functional advantages, such as detergency, emulsification, and wetting. Its versatility makes it well-suited for a variety of applications in biochemical and biological research, with common uses including cell lysis, protein extraction, nuclei isolation and cell fractionation. We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. This product is a biobased surfactant and is aligned with the 7th principle of Green Chemistry "Use of Renewable Feedstocks" and the 10th principle "Design for Degradation".
TWEEN 20 is a polyoxyethylene sorbitol ester that belongs to the polysorbate family. It is a nonionic detergent having a molecular weight of 1,225 daltons, assuming 20 ethylene oxide units, 1 sorbitol, and 1 lauric acid as the primary fatty acid. The ethylene oxide subunits are responsible for the hydrophilic nature of the surfactant, while the hydrocarbon chains provide the hydrophobic environment. Sorbitol forms the backbone ring to which the ethylene oxide polymers are attached.

Specifications

Synonymes
POE (6) sorbitol monolaurate | Tween(R) 20 | 2-{2-[3,4-bis(2-hydroxyethoxy)oxolan-2-yl]-2-(2-hydroxyethoxy)ethoxy}ethyl dodecanoate | SCHEMBL118527 | Tween 40 (TN) | 1052273-76-3 | 2-(2-(3,4-bis(2-hydroxyethoxy)tetrahydrofuran-2-yl)-2-(2-hydroxyethoxy)eth
Spécifications et pureté
Suitable for molecular biology, viscous liquids
Informations juridiques
TWEEN is a registered trademark of Croda International PLC
Conditions de stockage de stockage
Room temperature
Grade
Suitable for molecular biology
Note
Note: TWEEN 20 may be unstable under autoclaving, particularly in buffered solutions containing metal cations. Autoclaving is not recommended without prior testing for property changes. TWEEN 20 is heat-sensitive and may darken when exposed to elevated temperatures. Polysorbates are reported to be incompatible with alkalis, heavy metal salts, phenols, and tannic acid. They may also reduce the activity of various preservatives. Aqueous solutions of polysorbates undergo auto-oxidation during storage, as well as changes catalyzed by light, elevated temperatures, and copper sulfate.
Noms et identifiants
Pubchem Sid508812887
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/508812887
Sourires canoniquesCCCCCCCCCCCC(=O)OCCOCC(C1C(C(CO1)OCCO)OCCO)OCCO
IUPAC Name2-[2-[3,4-bis(2-hydroxyethoxy)oxolan-2-yl]-2-(2-hydroxyethoxy)ethoxy]ethyl dodecanoate
InChIKeyHMFKFHLTUCJZJO-UHFFFAOYSA-N
INCHI1S/C26H50O10/c1-2-3-4-5-6-7-8-9-10-11-24(30)34-19-18-31-20-22(32-15-12-27)26-25(35-17-14-29)23(21-36-26)33-16-13-28/h22-23,25-29H,2-21H2,1H3
Isomères SMILES CCCCCCCCCCCC(=O)OCCOCC(C1C(C(CO1)OCCO)OCCO)OCCO
WGK Allemagne 1
RTECS TR7400000
Poids moléculaire 1228 (for n= 20)

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassLipids and lipid-like molecules
ClasseFatty Acyls
SubclassFatty acid esters
Intermediate Tree Nodes Not available
Direct ParentFatty acid esters
Alternative Parents Tetrahydrofurans  Carboxylic acid esters  Oxacyclic compounds  Monocarboxylic acids and derivatives  Dialkyl ethers  Primary alcohols  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents Fatty acid ester - Tetrahydrofuran - Carboxylic acid ester - Carboxylic acid derivative - Dialkyl ether - Ether - Monocarboxylic acid or derivatives - Organoheterocyclic compound - Oxacycle - Organic oxide - Carbonyl group - Alcohol - Organooxygen compound - Primary alcohol - Hydrocarbon derivative - Organic oxygen compound - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as fatty acid esters. These are carboxylic ester derivatives of a fatty acid.
External Descriptors a small molecule
Structure 3D
Modèle de structure chimique interactif





Mécanismes d'action
Certificats (CoA, COO, BSE/TSE et tableau d'analyse)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

8 results found

Lot NumberCertificate TypeDateArticle
G2618025Certificate of AnalysisJul 29, 2026 T434505
G2618021Certificate of AnalysisJul 29, 2026 T434505
F2610182Certificate of AnalysisJun 13, 2026 T434505
C2425038Certificate of AnalysisApr 17, 2026 T434505
C2310592Certificate of AnalysisDec 10, 2025 T434505
F23161117Certificate of AnalysisJun 20, 2023 T434505
F23161120Certificate of AnalysisJun 20, 2023 T434505
C2310605Certificate of AnalysisMar 23, 2023 T434505
Propriétés chimiques et physiques
Indice de réfraction1.4685-1.4715
Point d'éclair (°C)>149℃
Point d'ébullition (°C)100°C
Point de fusion (°C)-14 °C
Poids moléculaire522.700 g/mol
XLogP32.500
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count10
Rotatable Bond Count26
Exact Mass522.34 Da
Monoisotopic Mass522.34 Da
Topological Polar Surface Area133.000 Ų
Heavy Atom Count36
Formal Charge0
Complexity507.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count4
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
FAQ et articles
Immunocytochemistry (ICC) protocol
Native ChIP (N-ChIP) Protocol
Cross-linking ChIP-Seq (X-ChIP-Seq) protocol
Chromatin preparation from tissues for chromatin immunoprecipitation (ChIP)
Western Blot Protocol
Tween 20 and Tween 80 as Non-Ionic Surfactants: Structure, Properties, and Applications
Molecular Biology Grade
Enzyme Protectants and Common Methods to Prolong Enzymatic Activity
Common Issues for Western Blot (WB)
How to Choose Between Tween 20, Tween 60, and Tween 80?
Buffer Additives to Prevent Protein Precipitation
Common Protectants and Formulations for Protein Storage
11 Common Methods for Protein Concentration Determination
Differences Among Antibodies for WB/FC/IP/ChIP/IF/IHC
Principles and Application Strategies of Common PCR Enhancers
NPE (NP-n) Selection Guide: How EO Number Affects Solubility, HLB, Cloud Point, and CMC | With an Aladdin Product Reference Table
A Practical Guide to Fragrance Compositions: Turning a Black-Box Formula into an Engineerable System—Compatibility, Stability, Controlled Release, Traceability, and Selection
A Panoramic Guide to Surfactants: Definitions & Mechanisms, Key Metrics, Application Scenarios, and Selection Navigation (Tables 1–3)
Protein Tags Demystified: Classification, Properties, and Suitable Experimental Applications
Why Acridine Can Turn “Trace Molecules” into a Measurable Light Signal: A Mechanistic, Selection, and Troubleshooting Guide to Acridinium Ester Chemiluminescent Immunoassays (Including Product Tables 1–4)
Acid Phosphatase: Dephosphorylation Reactions in Acidic Microenvironments and Their Research, Assay, and Detection Applications
Diaphorase: NAD(P)H-Dependent Electron-Transfer Activity and Its Applications in Detection and Research
Haptoglobin (Hp): A Key Carrier in the Free Hemoglobin Clearance–Detoxification Axis, with Assays and Applications
Urinary Follicle-Stimulating Hormone (uFSH): Source Attributes, Molecular Properties, and Research Application Frameworks
Cholesterol Esterase: Mechanistic Insights and Application Frameworks Driven by Interfacial Hydrolysis
Angiotensin-Converting Enzyme (ACE): A Review of Molecular Features, Catalytic Functions, and Research and Translational Applications
Hemicellulases: A Review of Substrate Specificity, Catalytic Systems, and Research and Industrial Applications
Phytase: Enzymological Properties, Mechanism of Action, and Applications in Feed and Food
Chitinases: Substrate-Specific Degradation Mechanisms, Enzymatic Properties, and Application Directions
Review of the Principles, Common Methods, and Key Application Considerations for the Determination of Glycerol and Triglyceride Contents
Glycoprotein Hormone Family: Molecular Features, Signaling Bias, and In Vivo Pharmacokinetics
Tyramide Signal Amplification in In Situ Fluorescence Detection
Protein Carbonyl Detection
Selection Strategy for PBS, TBS, PBST, and TBST Washing Systems in IHC
Preparation Methods and Precautions for Silane Coupling Agent Primer Solutions
Solvents, Co-solvents, and Solubilization Systems in Home and Personal Care Formulations: Classification, Functions, and Selection Guide
Practical Guide to TSA Tyramide Signal Amplification: How to Select Reagents, Optimize the Workflow, and Reduce Background When Detection Signals Are Weak for Low-Abundance Targets
Signal Transduction Mechanism of Graphene Biosensors: From Molecular Recognition to Electrical/Optical Signal Readout and Materials Selection
Why Limonene Can Soften Greasy Soils Yet Is Difficult to Dissolve in Water: Understanding the Cleaning Mechanism and Formulation Applications of Naturally Derived Solvents from Molecular Structure
Interfacial Mechanism and Formulation Applications of AEO-9 (Fatty Alcohol Polyoxyethylene Ether): An Analysis of Emulsification, Wetting, Oil Soil Removal, and Co-Formulation Compatibility
Analysis of the Foaming Performance Differences Between K12 and AOS: Structure, Acid–Base Stability, and Formulation Selection
Structural Characteristics, Low-Temperature Flowability, and Home-Care Cleaning Applications of Palm-Derived Isomeric Alcohol Polyoxyethylene Ether PLE-S9
Structural Logic of Nonionic Surfactants: Mechanisms of Action, Classification Features, and Selection Principles
Why Are Daily Chemical Products Prone to Viscosity Thinning in Summer? Core Mechanisms, Troubleshooting Methods, and Solutions
Understanding the Four Classes of Surfactants Through Molecular Charge: Application Logic of Anionic, Cationic, Amphoteric and Zwitterionic, and Nonionic Surfactants in Personal Care and Home Care
Antibody Purification Tag Strategies and Applications
Biotin-Streptavidin System: The Golden Tool for Protein Research
Comparison of Bilirubin Detection Methods: Application Selection of the Diazo Method, Vanadate Oxidation Method, Bilirubin Oxidase Method, and HPLC
Antioxidant Mechanisms of Ferulic Acid in Skincare, Vitamin C/E Synergy, and Stable Delivery Applications
Bacterial Cell Wall Degradation Technology
Applications of Cell Permeabilization Technology in Immunofluorescence and Flow Cytometry Detection
Mechanisms of Action, Formulation Screening, and Safety Evaluation of Solubilizers, Hydrotropes, and Cosolvents in Drug-Delivery Systems
Citations of This Product
Calculateurs de solution
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