polysorbate 40 CAS 9005-66-7

Product Name: Polysorbate 40
English Alias: Tween 40; Polyoxyethylene (20) sorbitan monopalmitate
CAS Number: 9005-66-7
Molecular Formula: C₆₂H₁₂₂O₂₆ (approximate, varies with ethylene oxide units)
Molecular Weight: ~1283.6 g/mol (approximate)
Appearance: Yellow to amber viscous liquid or gel
Package: 25 kg/drum, 50 kg/drum (HDPE plastic drum)

What is Polysorbate 40？

Polysorbate 40 is a nonionic surfactant derived from sorbitol and palmitic acid, appearing as a yellow to amber viscous liquid or gel with a characteristic mild odor. It is soluble in water, ethanol, and most organic solvents. As a polysorbate surfactant, it functions as an effective emulsifier, dispersant, and solubilizer for oil-in-water (O/W) emulsions. It exhibits good stability, compatibility, and low toxicity.

COA (Certificate of Analysis):

Properties	Standard Value	Test Value
Appearance	Yellow to orange viscous liquid or paste	Conforms
Acid Value (mg KOH/g)	≤ 2.0	1.0
Saponification Value (mg KOH/g)	41 ~ 52	44.9
Hydroxyl Value (mg KOH/g)	90 ~ 107	96.7
Moisture (w/%)	≤ 3.0	2.0
Residue on Ignition (w/%)	≤ 0.25	0.15
Lead Pb (mg/kg)	≤ 2	< 2
Oxyethylene (w/%)	66.0 ~ 70.5	69.1
Test results	Pass

Application:

Food Industry: Emulsifier in baked goods, ice cream, and whipped toppings

Cosmetics: Emulsifier and solubilizer in creams, lotions, and personal care products

Pharmaceuticals: Excipient in oral suspensions, tablets, and topical formulation

Agrochemicals: Emulsifier and dispersant in pesticide formulations

Textile Processing: Lubricant and softener in fiber processing

Industrial Applications: Emulsifier in lubricants and metalworking fluids

Safety Profile:

Polysorbate 40 is generally recognized as safe (GRAS) for food use and approved for cosmetic and pharmaceutical applications. May cause mild eye irritation. Use appropriate personal protective equipment including gloves when handling. The substance is biodegradable and has low environmental impact. For detailed safety information, consult the full Safety Data Sheet (SDS).

Storage Requirements:

Store in a cool, dry, well-ventilated area away from direct sunlight. Keep containers tightly closed and sealed. Maintain storage temperature between 10-30°C. Protect from moisture and freezing.

Transport & Packaging:

Polysorbate 40 is packaged in HDPE plastic drums (25 kg or 50 kg net weight per drum). Transport as non-hazardous material under normal conditions. Ensure containers are properly sealed and protected from physical damage during transportation. Store away from strong oxidizing agents.