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Quick answers to common questions about Glycerine
Because Spiga Nord is the direct manufacturer of pharmaceutical-grade glycerol: the overall quality of its supplies is therefore guaranteed and consistently maintained over time, since every aspect related to manufacturing, quality control, packaging, and warehousing falls entirely under its own control.
Spiga Nord’s refined glycerin is used in a wide range of products: from cosmetic, food, and pharmaceutical formulations to the tobacco industry, toothpastes, polyurethanes, paint resins, and explosives.
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Thanks to its fifty years of experience in producing refined glycerin, Spiga Nord is able to manufacture a pharmaceutical-grade refined glycerol characterized by high chemical and microbiological purity, and the absence of substances harmful to humans such as diethylene glycol and related compounds, residual solvents, mycotoxins, pesticides, and heavy metals.
Quick answers to common questions about Polyglycerols
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Their vegetable origin enables formulators to incorporate them into 100% natural finished products. This characteristic offers particular value in cosmetic applications, where dermatological and environmental concerns increasingly call the use of ethoxylated derivatives into question. Polyglycerol esters enable formulators to create emulsions without ethoxylated compounds.
They also meet the requirements established by COSMOS and ECOCERT FRANCE for cosmetic raw materials.
During research and development, manufacturers must ensure that the product retains its stability and functionality throughout its entire shelf life. In particular, cosmetic products must preserve their consistency, fragrance, softness and rapid absorption during use. Together with other formulation components, polyglycerol esters help manufacturers achieve both objectives.
Formulators can use them as non-ionic emulsifiers, dispersing agents, emollients, humectants or thickening agents in personal care products.
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Manufacturers can use Spiga Nord’s Polyglycerols to produce esters that comply with the specifications outlined in European Regulation 2023/1329 for the food additives E475 POLYGLYCEROL ESTERS OF FATTY ACIDS and E476 POLYGLYCEROL POLYRICINOLEATE, as well as with the requirements established by 21 CFR 172.854 for the food additive POLYGLYCEROL ESTERS OF FATTY ACIDS.
Polyglycerol esters perform several functions in food products. They act as emulsifiers, fat replacers, and processing aids that help preserve the food’s rheological properties.
The reaction of polyglycerol with fats, oils, or fatty acids produces E475. The resulting product may contain mono-, di-, and triglycerides, along with free glycerol and fatty acids.
Food manufacturers widely use fatty acid esters as structuring agents, complexing agents, humectants, anti-foaming agents, and anti-splatter agents.
Polyglycerol polyricinoleate primarily acts as a viscosity-modifying agent.
It also helps stabilize emulsions in oil–water systems with a very high water content.
For example, the additive E476 effectively maintains the integrity of chocolate in food coatings.
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Polyglycerol, and more commonly its esters, is used in the production of polymers: as a plasticizer, to provide new and specific rheological properties to the product, added directly during mass or suspension polymerization or in the final stages of production; as an anti-fog agent capable of migrating toward the surface of the polymer but not outside the product itself; and as a lubricant, thanks to its high viscosity even at elevated temperatures.