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ChemicalBook >> CAS DataBase List >>Polysorbate 20

Polysorbate 20

CAS No.
9005-64-5
Chemical Name:
Polysorbate 20
Synonyms
TWEEN 20;SORBITAN MONOLAURATE;PEG-80 SORBITAN LAURATE;capmul;Polisorbate 20- PS 20;POLYETHYLENE GLYCOL SORBITAN MONOLAURATE;POLYOXYETHYLENE (20) SORBITAN MONOLAURATE;TWEEN 20PURE;POLYSORBATE 21;Tween-20(Tween20)
CBNumber:
CB3462544
Molecular Formula:
C26H50O10
Molecular Weight:
522.6692
MDL Number:
MFCD00165986
MOL File:
9005-64-5.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-06-05 18:44:30
Product description Number Pack Size Price
Polysorbate 20 W291501 1 each $58
ECO TWEEN? 20 viscous liquid STS0200 250 mL $69.4
ECO TWEEN? 20 viscous liquid STS0200 1 L $206
TWEEN? 20 BioXtra, viscous liquid P7949 2.5L $333
TWEEN? 20 viscous liquid P1379 1KIT $156
More product size

Polysorbate 20 Properties

Melting point 98.9 °C (decomp)
Boiling point 100 °C
Density 1.11 g/mL at 20 °C
vapor pressure <1.4 hPa (20 °C)
refractive index n20/D 1.468(lit.)
FEMA 2915 | POLYSORBATE 20
Flash point >230 °F
storage temp. Store below +30°C.
solubility 100 g/L
form viscous liquid
color Amber
Specific Gravity 1.090~1.130 (20/20℃)
PH Range 7
PH 6-8 (50g/l, H2O, 20℃)
Odor mild alcohol odor
Odor Type alcoholic
biological source synthetic
Viscosity 250-450mPa.s(25°C)
Water Solubility 100 g/L
Hydrophilic-Lipophilic Balance (HLB) 16.7
Stability Stable. Incompatible with strong oxidizing agents.
Cosmetics Ingredients Functions SURFACTANT - EMULSIFYING
SURFACTANT - CLEANSING
Cosmetic Ingredient Review (CIR) Polysorbate 20 (9005-64-5)
InChI 1S/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
InChIKey HMFKFHLTUCJZJO-UHFFFAOYSA-N
SMILES CCCCCCCCCCCC(=O)OCCOCC(C1C(C(CO1)OCCO)OCCO)OCCO
Substances Added to Food (formerly EAFUS) POLYSORBATE 20
FDA 21 CFR 173.310(Boiler water additives); 175.105(Adhesives); 178.3400(Emulsifiers and/or surface-active agents)
EWG's Food Scores 3-8
FDA UNII PEG-80 SORBITAN LAURATE (239B50Y732)
PEG-75 SORBITAN LAURATE (31JQ3WOL8T)
PEG-10 SORBITAN LAURATE (4Z93U4C2WN)
POLYSORBATE 21 (59IO08SBZU)
POLYSORBATE 20 (7T1F30V5YH)
EPA Substance Registry System Polysorbate 20 (9005-64-5)
Cosmetics Info Polysorbate 20
Absorption = 0.025 at 254nm at 0.05% (w/v)
UNSPSC Code 41116107
NACRES NA.31

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P302+P352-P305+P351+P338-P362+P364
PPE Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  22-36/37/38-37/38-41
Safety Statements  24/25-36/37/39-36-26
WGK Germany  1
RTECS  TR7400000
10-23
TSCA  TSCA listed
HS Code  34021300
Storage Class 10 - Combustible liquids
Hazardous Substances Data 9005-64-5(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 38900 mg/kg
REACH Registrations Active
NFPA 704
1
0 0

Polysorbate 20 price More Price(103)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich W291501 Polysorbate 20 9005-64-5 1 each $58 2026-04-30 Buy
Sigma-Aldrich STS0200 ECO TWEEN? 20 viscous liquid 9005-64-5 250 mL $69.4 2026-04-30 Buy
Sigma-Aldrich STS0200 ECO TWEEN? 20 viscous liquid 9005-64-5 1 L $206 2026-04-30 Buy
Sigma-Aldrich P7949 TWEEN? 20 BioXtra, viscous liquid 9005-64-5 2.5L $333 2026-04-30 Buy
Sigma-Aldrich P1379 TWEEN? 20 viscous liquid 9005-64-5 1KIT $156 2026-04-30 Buy
Product number Packaging Price Buy
W291501 1 each $58 Buy
STS0200 250 mL $69.4 Buy
STS0200 1 L $206 Buy
P7949 2.5L $333 Buy
P1379 1KIT $156 Buy

Polysorbate 20 Chemical Properties,Uses,Production

Description

Tween 20, whose common commercial names includes Alkest TW 20 and Polysorbate 20, is a mild nonionic surfactant formed by the ethoxylation of sorbitan before the addition of lauric acid which is a medium-chain fatty acid found mainly in coconut oil. It is allowed to be used as the emulsifier, detergent, dispersant, solvent and stabilizer, etc. in a number of fields such as pharmaceutical, chemical, food, textile and other industries due to its stability and relative non-toxicity.
Tween 20 is widely applied in biological techniques and sciences, which can be added to buffers and reagents for immunohistochemistry, such as Western blots and ELISAs, helping to prevent non-specific antibody binding, decrease background staining and enhance reagent spreading. Besides, Tween 20 also has applications in food production as a common food grade additive which are found in many consumables on the market today. It can also be used as a wetting agent in flavored mouth drops such as Ice Drops, in oral or non-gastrointestinal suspensions and in rubber balers in the elastomer industry.

References

https://en.wikipedia.org/wiki/Polysorbate_20
http://www.organic-creations.com/thickeners-stabilizers/599-polysorbate-20

Chemical Properties

Yellow liquid

Chemical Properties

Polysorbate 20 is a mixture of laurate partial esters of sorbitol and sorbitol anhydrides condensed with approximately 20 mole of ethylene oxide (C2H4O) for each mole of sorbitol and its mono- and dianhydrides. It has a faint, characteristic odor and a warm, somewhat bitter taste.

Uses

polysorbate 20 is a solubilizer, emulsifier, viscosity modifier, and stabilizer of essential oils in water.

Uses

Used for solubilizing membrane proteins during isolation and purification.Polysorbate 20 is used as a wetting agent in flavored mouth drops. It acts as a washing agent in Western blots and ELISAs and prevents antibody binding. It is a solubilizing agent of membrane proteins. In pharmaceutical chemistry, it is used as an excipient to stabilize emulsions and suspensions. Further, it is used as a dispersing agent, stabilizer, lubricator and also used in creams, salves, ointments, protective creams, balms, pomades, lipsticks, mascaras and glosses.

Definition

ChEBI: Polysorbate 20 (Tween 20) is a polymer composed of PEG-ylated sorbitan, where the total number of poly(ethylene glycol) units is 20 (w + x + y + z = 20) and a single terminal is capped by a dodecanoyl group. It is a surfactant and emulsifier used in cleaners and personal care products.

Preparation

polysorbate 20 is prepared by condensing the partial esters of sorbitol and its anhydrides with ethylene oxide to effect an oxyethylene copolymerization at the free hydroxyl groups.

brand name

Tween 20 (ICI Americas).

General Description

Polysorbate 20 is a hydrophilic nonionic surfactant generally used as emulsifiers, dispersing agent and solubilizer.

Health effects

Polysorbate 20 was a skin irritant in dermatitis patients but was reported not to induce irritant responses when applied to the intact skin of health volunteers. It produced, at worst, minimal irritation in the eyes of rabbits. Only a small number of cases of skin sensitization have been reported in humans, although a moderate to strong sensitizing potential was seen in guinea-pigs treated by intradermal injection.

Flammability and Explosibility

Non flammable

Biological Activity

Tween(R) 20, functioning as a detergent, potentially operates by binding to the hydrophobic components of water-insoluble substances, thereby making them hydrophilic.

Safety Profile

Moderately toxic by intravenous route. Mddly toxic by ingestion. A human skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes.

Polysorbate 20 Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 1057)Suppliers
Supplier Tel Email Country ProdList Advantage
Aladdin Scientific
tp@aladdinsci.com United States 57505 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763 sales@tnjchem.com China 34563 58
Nanjing Well Pharmaceutical Group Co., Ltd
+86-15150507972 missliang999@outlook.com China 68 58
Dayang Chem (Hangzhou) Co.,Ltd.
+86-0571-88938639 +8617705817739 info@dycnchem.com China 52705 58
Linyi Changqing Chemical Co., LTD
+86-0532-55729510 +86-15853232676 marketing@echemi.com China 288 58
Hebei Chuanghai Biotechnology Co., Ltd
+8615350571055 Sibel@chuanghaibio.com China 8738 58
Hebei Yanxi Chemical Co., Ltd.
+8618531123677 faithe@yan-xi.com China 5853 58
Wuhan Fortuna Chemical Co., Ltd
+86-27-59207850 info@fortunachem.com China 5983 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-86-13131129325 +8613131129325 sales1@chuanghaibio.com China 5228 58
Hebei Chuanghai Biotechnology Co., Ltd
+8615531151365 mina@chuanghaibio.com China 18126 58

Related articles

Related Qustion

Ask a question
Q:Is it necessary to add Polysorbate 20 in ELISA and western blot experiments?Theon - Jun 5,2026
A:The primary purposes of adding Polysorbate 20 in ELISA and western blot experiments are to reduce non-specific background binding, ensure even distribution of reagents, and act as a washing agent to remove weakly bound proteins.

View Lastest Price from Polysorbate 20 manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Tween 20 pictures 2026-06-08 Tween 20
9005-64-5
0.99 RongNa Biotechnology Co.,Ltd
Polysorbate 20 pictures 2026-06-08 Polysorbate 20
9005-64-5
1kg 98%min 20mt WUHAN FORTUNA CHEMICAL CO., LTD
Tween 20 pictures 2026-06-01 Tween 20
9005-64-5
$33.00 10g TargetMol Chemicals Inc.
  • Tween 20 pictures
  • Tween 20
    9005-64-5
  • 0.99
  • RongNa Biotechnology Co.,Ltd
  • Tween 20 pictures
  • Tween 20
    9005-64-5
  • $33.00
  • TargetMol Chemicals Inc.
PESTLE AND TUBE 1.5ML ASSORTED ZYP-5052 AUTOINDUCTION MEDIA EMALEX ET-2020 FEMA 2915 PROTEIN SOLUBILIZER 20 POLYETHOXYETHANOL SORBITAN MONOLAUREATE POLYOXYETHYLENE (20) MONOLAURATE POLYOXYLETHYLENE (20) SORBITAN MONOLAURATE POLYOXYLETHYLENE SORBITAN MONOLAURATE POLYOXYETHYLENE (80) SORBITAN MONOLAURATE POLY(OXYTHEYLENE)N-SORBITAN-MONOLAURATE POLYSORBATUM 20 POLYSORBATE 20 POE (20) SORBITAN MONOLAURATE SURFACT-AMPS(TM) 20 TWEEN(R) 20 BIOXTRA, VISCOUS LIQUID SURFACTANTS(glyceryl monosterate PEG-40 SORBITAN LAURATE PEG-44 SORBITAN LAURATE PEG-75 SORBITAN LAURATE POLYOXYETHYLENE(80) SORBITAN MONOLAURAT& POLYOXYETHYLENESORBITAN MONOLAURATE*SIGM AULTRA POLYOXYETHYLENE (20) SORBITAN MONOLAURATE SOLUTION, 70% WATER Tween 20 (=Polyoxyethylene Sorbitan Monolaurate) [for Biochemical Research] POLYSORBATE 20 extrapure Polysorbatum 20, Tween(R) 20 Polyethylene glycol sorbitan monolaurate solution, Polyoxyethylenesorbitan monolaurate Polyethylene glycol sorbitan monolaurate, Polyoxyethylenesorbitan monolaurate polyoxyethylene sorbitan monolauric acid ester TWEEN 20MOLECULAR BIOLOGY GRADE Polysorbate 20,Polysorbatum 20, Tween 20 TWEEN 20,Polyethylene glycol sorbitan monolaurate, Polyoxyethylenesorbitan monolaurate, Polysorbate 20 TWEEN 20,Polyethylene glycol sorbitan monolaurate, Polyoxyethylenesorbitan monolaurate Tween 20, synthesis grade Tween\(rg 20 Polyoxyethylene sorbitan monolaurate (Tween 20) Tween(R) 20,Ph. Eur. & USP Polysorbate 20 (2 g) (AS) Polysorbate 20, Electrophoresis Grade Polysorbate 20, USP Tween(R) 20 (Polysorbate), NF, Ph Eur Polysorbate 20 (2 g) Tween 20  Tween 20 1LT Twain 20 TWEEN(R) 20 Vetec(TM) reagent grade, 40% ACRYL/BIS 37.5:1 PREMIXED PWD ULTRA PURE TWEEN 20 ELECTROPHORESIS GRADE TWEEN 20 BP GRADE Tween20=Polysorbate20 POLYSORBATE,20(BULK POLYSORBATE,20,FCC POLYSORBATE,20,NF Polysorbate 20/80 POLYOXYETHYLENE(6)SORBITANMONOLAURATE SORBITANPOLYOXYETHYLENEMONOLAURATE POLYOXYETHYLENE(2)SORBITANMONOLAURATE POLYOXETHYLENE(20)SORBITANMONOLAURATE
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