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| Key points for selecting emulsifier Tween T-80 |
| ¡¡Hits£º299¡¡AddTime£º2026/5/12 11:27:48 |
| The core of choosing a Tween T-80 is to first determine the grade, then verify the physical and chemical indicators, verify the application stability, ensure compliance and supply chain reliability, and focus on the three hard indicators of purity, acid value, and heavy metals. 1¡¢ Clearly define the application level (primary) Divided by purpose into industrial grade, food grade, and pharmaceutical grade, the grade determines the price and safety bottom line. Industrial grade: coatings, pesticides, textiles, metal processing. The appearance is a light yellow to amber viscous liquid with no obvious impurities; Acid value ¡Ü 2.0mgKOH/g, moisture content ¡Ü 3.0%, heavy metals ¡Ü 10ppm. Food grade (GB 4806): Food emulsification/solubilization. Clarify without sediment; Acid value ¡Ü 1.0, moisture content ¡Ü 2.0%, heavy metals ¡Ü 5ppm, arsenic ¡Ü 1ppm, food production license and COA are required. Pharmaceutical grade (Chinese Pharmacopoeia/USP): Injection, oral liquid. Strict clarification; Acid value ¡Ü 0.8, heavy metal ¡Ü 0.5ppm, no pyrogen, no allergenicity, requires pharmacopoeia certification and TSE/BSE declaration. 2¡¢ Core physical and chemical indicators (mandatory inspection) table Impact of indicator standard range Appearance: Amber colored viscous liquid, clear without sediment, turbid/layered=impurities/degradation Purity ¡Ý 99% (HPLC) Low purity affects emulsification efficiency and stability HLB values of 14.5-15.5 (typical 15) determine O/W emulsifying ability, and deviation leads to stratification Acid value ¡Ü 1.0 (food/medicine); ¡Ü 2.0 (industrial) high free acid ¡ú irritation, corrosion, poor stability The saponification value of 45-55mgKOH/g reflects the ester group content, and deviation affects the emulsifying performance The hydroxyl value of 65-80mgKOH/g reflects the chain length of polyethylene oxide and affects hydrophilicity Moisture content ¡Ü 2.0% (food/medicine); ¡Ü 3.0% (industrial) high moisture content ¡ú hydrolysis, shortened shelf life Heavy metal (Pb) ¡Ü 5ppm (food); ¡Ü 0.5ppm (pharmaceutical) safety limit, prohibited if exceeding the limit 3¡¢ Key Performance Verification (Practical) Emulsification stability: Perform room temperature/high temperature (40 ¡æ)/low temperature (-5 ¡æ) cycles according to the formula, and it is qualified if there is no layering or precipitation for 7 days; Compound with Span 80 can improve stability. Compatibility: Compatible with other additives (electrolytes, preservatives, pigments) in the system, without flocculation, discoloration, or viscosity reduction. Temperature/acid alkali resistance: suitable for pH 5-7, temperature ¡Ü 80 ¡æ; Extreme conditions require accelerated aging testing. 4¡¢ Compliance and document review (mandatory) Qualifications: Food grade requires SC certification, pharmaceutical grade requires GMP and pharmacopoeia compliance documents. Reports: COA (Batch Quality Inspection), MSDS (Safety), TSE/BSE (Pharmaceutical), REACH (Export). Traceability: The source of raw materials (ethylene oxide, oleic acid) is clear and the batch can be traced. 5¡¢ Suppliers and Supply Chain (Guarantee) Production capacity and inventory: Annual production capacity ¡Ý 1000 tons, with regular inventory to avoid supply interruptions. Technical services: Provide formula optimization, trial support, on-site debugging, and reduce trial and error costs. Packaging and storage: 25kg/50kg/200kg food grade plastic drums, cool, dry and sealed, with a shelf life of 2 years. 6¡¢ Key points for avoiding pitfalls ❌ Low price unqualified products: prone to impurities, excessive heavy metals, and poor stability. ❌ False indicators: Upon arrival, purity, acid value, and heavy metals will be randomly inspected. If they do not meet the requirements, they will be returned or exchanged. ❌ Neglecting compatibility in compounding: A small test must be conducted before compounding with solvents, electrolytes, etc. Priority for purchasing Compliance level ¡ú Physical and chemical indicators (purity/acid value/heavy metals) ¡ú Emulsification stability ¡ú Supplier technical services ¡ú Price |
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