E463a: Low-Substituted Hydroxypropyl Cellulose
Main role: binding and disintegration control
Also listed as: L-HPC, low-substituted cellulose hydroxypropyl ether
What is E463a (Low-Substituted Hydroxypropyl Cellulose)?
E463a is cellulose modified with a lower degree of hydroxypropyl substitution than E463. That difference changes its swelling and processing behavior, making the separate code useful for identifying the preparation.
What does it do in food?
Its main role is binding and disintegration control. Texture ingredients help a recipe control thickness, binding, or separation. Their behavior depends on temperature, acidity, concentration, and other ingredients; two thickeners with similar names may not perform identically.
Food and formulation examples
- Specified food supplement tablets
- Solid supplement preparations
These examples describe formulation roles, not a list of unrestricted legal uses. Availability and permitted applications differ by country and food category.
Label names and ingredient questions
Look for E463a, E 463a, or the ingredient name. Related names and label terms include L-HPC, low-substituted cellulose hydroxypropyl ether. A family code can cover more than one specified form; check the full declaration when the distinction matters.
L-HPC and ordinary hydroxypropyl cellulose E463 are distinct grades. The shared cellulose backbone does not establish identical dissolution behavior in a tablet.
Is E463a safe?
The EU authorization of low-substituted hydroxypropyl cellulose specifically concerns solid supplement tablets, following an assessment of the proposed use. It should not be read as permission for every food. EU Regulation 2018/1461.
A label identifies the ingredient but usually not its concentration. Calculating daily intake requires the amount in the food and the quantities eaten.
Authorization and conditions of use
The Great Britain food additive register lists E463a as Low-substituted hydroxypropyl cellulose (L-HPC). This is an entry subject to its stated conditions, not unrestricted permission for every food. The record links to the applicable authorization terms. For an EU product, use the European Commission food additive database to check the relevant food category and limits. Other countries may use different names or rules.