Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Polyoxyethylene stearate
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Polyethylene Glycol Monostearate N-2
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: Polyoxyethylene stearate
Price: ￥Inquiry/25kg
Purity: 99.0%
Stocking Period: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

9004-99-3

9004-99-3 structure

Name: Polyoxyethylene stearate
Chemical Name: Polyethylene Glycol Monostearate N-2
CAS Number: 9004-99-3
Molecular Formula: C₂₀H₄₀O₃
Molecular Weight: 328.530
Catalog: Surfactant Nonionic surfactant Polyol ester type
Create Date: 2018-09-05 11:43:05
Modify Date: 2026-06-30 20:20:13
Polyoxyethylene stearate (POES) is a non-ionic emulsifying agent.

Name	Polyethylene Glycol Monostearate N-2
Synonyms	PEG 200 STEATE n(=:)2 (palMitate and steate Mixture) Polyethylene Glycol Monosteate (n=approx. 55) (palmitate and steate mixture) Polyethylene Glycol Monosteate (n=approx. 45) (palmitate and steate mixture) Polyethylene Glycol Monosteate (n=approx. 25) (palmitate and steate mixture) 2-Hydroxyethyl stearate ETHYLENE GLYCOL MONOSTEARATE polyoxyethylene glycol monosteate PEG-45 STEATE OCTAETHYLENE GLYCOL MONOOCTADECYL ETHER POLYOXYL 50 STEATE PEG 1500 Monosteate POLYOXYETHYLENE(4)STEICACID(MONOESTER) Polyoxyethylene steate Polyethylene Glycol Monosteate POLYOXYETHYLENE 100 STEATE Polyoxyl 75 Steate MYRJ 58 PEG-23 STEATE PEG-25 STEATE Ethylene glycol, monostearate Stearic acid, 2-hydroxyethyl ester MYRJ 59 Polyoxyethylene steate,Myrj52 PEG-90 STEATE Polyoxyl 32 Steate Polyethylene Glycol Monosteate (n=approx. 4) (palmitate and steate mixture) Polyoxyl 8 Steate PEG-18 STEATE PEG-32 STEATE MFCD00151755 PEG-35 STEATE PEG-36 STEATE MYRJ(TM) 53 Poly(oxy-1,2-ethanediyl), .α.-hydro-.ω.-hydroxy-, octadecanoate MYRJ(TM) 59 PEG-55 STEATE PEG-50 STEATE PEG-10 STEATE Pegosperse(R) 400 MS OCTADECYLOCTAGLYCOL POLYOXYETHYLENE 8 STEATE Polyethylene Glycol Monosteate (n=approx. 40) (palmitate and steate mixture) Polyoxyl 100 Steate PEG-30 STEATE PolyethyleneGlycolMonosteate(n=approx.10)(palmitateandsteatemixture) Polyoxyl 6 Steate MYRJ(TM) 45 PEG-5 STEATE MYRJ(R) 53 OCTADECYL OCTAETHYLENE GLYCOL ETHER PEG-7 STEATE Pegosperse(R) 1750 MS Polyethylene Glycol Monosteate (n=approx. 2) (palmitate and steate mixture) PEG-75 STEATE 2-Hydroxyethyl octadecanoate Polyoxyl 40 Steate PEG 1750 Monosteate MYRJ 45 C18E8 Octadecanoic acid, 2-hydroxyethyl ester 2-hydroxyethyl octadecanoate Pegosperse(R) 1500 MS 17-Hydroxy-3,6,9,12,15-pentaoxahtadec-1-yl octadecanoate

Description	Polyoxyethylene stearate (POES) is a non-ionic emulsifying agent.
Related Catalog	Signaling Pathways >> Membrane Transporter/Ion Channel >> P-glycoprotein Research Areas >> Cancer
In Vitro	Polyoxyethylene stearate has been recommended as an additive to the radiolabelled 7H12 Middlebrook TB media and as such has been shown to enhance growth of mycobacteria in the radiometric BACTEC rapid culture system. Polyoxyethylene (50) stearate produces the greatest enhancement in growth and reduction in the time taken to detect growth for M. tuberculosis and polyoxyethylene (30) stearate and polyoxyethylene (JL) stearate for species of mycobacteria other than M. tuberculosis[1]. Polyoxyethylene stearate inhibits P-gp mediated efflux in a concentration dependent manner mainly by modulating substrate-stimulated P-gp ATPase activity[2]. Polyoxyethylene 40 stearate reduces vinblastine sulfate efllux. The cytotoxicity of vinblastine to K562/ADR cells is significantly enhanced when the cells are cotreated with 100 or 150 μg/mL polyoxyethylene 40 stearate[3].
In Vivo	Polyoxyethylene stearate is potentially useful as a pharmaceutical ingredient to improve the oral bioavailability of coadministered P-gp substrates and substrates for certain CYP isoforms[2]. The average tumor volume and average tumor weight are significantly less in the polyoxyethylene 40 stearate+vinblastine group. The inhibition rate for tumor growth is increased from 0.06 (vinblastine group) to 0.84 (vinblastine+polyoxyethylene 40 stearate group)[3].
Cell Assay	Polyoxyethylene 40 stearate is added to the test vinblastine solution. The cytotoxicity of vinblastine to K562/ADR cells is then assessed. The final concentrations of polyoxyethylene 40 stearate are 0, 50, 100, and 150 μg/mL. After 8 hours of treatment, cells are incubated for 4 hours in the presence of MTT reagent and then lysed with DMSO. Absorbance is measured at 490 nM[3].
Animal Admin	Mice: Polyoxyethylene 40 stearate and vinblastine are dissolved in 0.9% sodium chloride solution, yielding a solution of 200 μg/mL VBL and 150 μg/mL PS40. The drug is injected subcutaneously in a volume of 0.1 mL per 10 g of body weight at a dosage of 2 mg/kg vinblastine and 1.5 mg/kg polyoxyethylene 40 stearate around the tumor every other day for 8 days. The volume of tumors and the weight of mice are measured every day from the day the tumors are formed[3].
References	[1]. Cutler RR, et al. The effect of polyoxyethylene stearate (POES) on the growth of mycobacteria in radiometric 7H12 Middlebrook TB medium. Tubercle. 1987 Sep;68(3):209-20. [2]. Zhu S, et al. Effects of polyoxyethylene (40) stearate on the activity of P-glycoprotein and cytochrome P450. Eur J Pharm Sci. 2009 Jul 12;37(5):573-80. [3]. Luo L, et al. Polyoxyethylene 40 stearate modulates multidrug resistance and enhances antitumor activity of vinblastine sulfate. AAPS J. 2007 Oct 5;9(3):E329-35.

Density	0.9±0.1 g/cm3
Boiling Point	438.4±18.0 °C at 760 mmHg
Melting Point	47ºC
Molecular Formula	C₂₀H₄₀O₃
Molecular Weight	328.530
Flash Point	164.6±14.0 °C
Exact Mass	328.297760
PSA	46.53000
LogP	7.85
Vapour Pressure	0.0±2.4 mmHg at 25°C
Index of Refraction	1.457

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TQ5950000

CHEMICAL NAME :: Polyethylene glycol monostearate #6000

CAS REGISTRY NUMBER :: 9004-99-3

LAST UPDATED :: 199710

DATA ITEMS CITED :: 6

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: AD277-689 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80463 No. of Facilities: 2667 (estimated) No. of Industries: 8 No. of Occupations: 10 No. of Employees: 40362 (estimated) NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81475 No. of Facilities: 1026 (estimated) No. of Industries: 7 No. of Occupations: 6 No. of Employees: 15937 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X8317 No. of Facilities: 9882 (estimated) No. of Industries: 71 No. of Occupations: 99 No. of Employees: 608690 (estimated) No. of Female Employees: 461354 (estimated)

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H315-H319-H335
Precautionary Statements	P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi:Irritant
Risk Phrases	R36/37/38
Safety Phrases	S26-S36
RIDADR	NONH for all modes of transport
WGK Germany	1
RTECS	MD0907300

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