Overview
Span 80 Emulsifier (99%) is a sorbitan monooleate-based nonionic surfactant, widely utilized for its emulsifying and stabilizing properties. Derived from sorbitol and oleic acid, it is particularly effective in forming water-in-oil (W/O) emulsions due to its hydrophobic nature (HLB ~4.3). The 99% purity grade ensures minimal impurities, making it suitable for sensitive applications like pharmaceuticals and food products. Its versatility spans industries such as cosmetics, where it stabilizes lotions and creams, and industrial processes, where it acts as a lubricant additive or textile softener. The emulsifier is compliant with major regulatory standards, including USP and FCC, underscoring its safety for controlled use.
Physical and Chemical Properties
Span 80 is an amber-colored viscous liquid with a mild characteristic odor. It exhibits a density of 1.0–1.1 g/cm³ and decomposes at temperatures exceeding 200°C rather than boiling. Its solubility profile is notable: it disperses readily in oils and organic solvents like ethanol but is insoluble in water, aligning with its low HLB value. Key chemical properties include its nonionic nature, which reduces sensitivity to pH changes, and its ester linkage, which offers moderate hydrolytic stability. These traits make it reliable in formulations requiring long-term emulsion stability, such as in processed foods or topical ointments.
Main Applications
In the food industry, Span 80 serves as an emulsifier in baked goods, ice cream, and margarine, ensuring uniform texture and shelf-life extension. Cosmetic formulations leverage its ability to stabilize W/O emulsions in creams, sunscreens, and makeup removers. Pharmaceuticals employ it in ointments and oral suspensions to enhance drug delivery. Industrial uses include lubricant additives to reduce friction and textile processing to improve fiber softness. Its role in agricultural adjuvants (e.g., pesticide sprays) highlights its versatility. The 99% purity is critical for applications demanding minimal contaminants, such as medical or high-end cosmetic products.
Safety and Storage
Span 80 is generally regarded as safe (GRAS) for food use within specified limits. Prolonged skin contact may cause mild irritation, necessitating protective gloves during handling. Ingestion or inhalation risks are low but should be avoided. Storage recommendations include keeping the product in sealed containers at ambient temperatures, away from moisture and direct sunlight to prevent degradation. Bulk storage tanks should use materials resistant to organic solvents, such as stainless steel or polyethylene.
B2B Procurement Guide
When procuring Span 80 Emulsifier (99%), prioritize suppliers who provide Certificates of Analysis (CoA) confirming purity and CAS number (1338-43-8). Verify compliance with relevant standards (e.g., USP for pharmaceuticals, FCC for food). Pricing varies by volume, with bulk purchases (e.g., drums or totes) offering cost savings. Sample testing is advisable to assess compatibility with specific formulations. Lead times may fluctuate due to raw material availability, so advance planning is recommended for large orders.
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