Is silicone glue toxic?

The toxicity of silicone adhesive (silicone sealant or silicone glue) depends on its specific ingredients and usage scenarios, and should be discussed separately:
1. Ingredients Determine Toxicity
Neutral Silicone Adhesive
Before Curing: May release trace amounts of volatile organic compounds (VOCs), such as alcohols or ketones, but these are generally low in toxicity and meet environmental standards (such as FDA certification or EU REACH regulations).
After Curing: Forms a stable silicone rubber that is chemically inert, virtually non-toxic, and heat- and corrosion-resistant. It is commonly used in food contact applications (such as kitchen seals) or medical applications (such as catheter bonding).
Main Ingredients: Silicone resin, crosslinker, catalyst (such as organotin or platinum compounds), filler, etc.

Acidic Silicone Adhesive
Before Curing: Releases an acidic odor that may irritate the respiratory tract or eyes, but generally does not pose a serious health risk.
After Curing: The acid evaporates completely, leaving a non-toxic residue. However, ventilation is necessary to avoid short-term irritation.
Main Ingredients: Contains acidic substances such as acetic acid as a curing catalyst.

Industrial-grade silicone glue
May contain additives such as plasticizers and mildew inhibitors. Some additives may contain heavy metals or hazardous substances.
Toxicity risk: Verify that the product has passed safety certifications (such as RoHS and REACH). Avoid prolonged contact with uncured glue.

Silicone glue is non-toxic and has no side effects. Food-grade and medical silicone tubing, for example, can come into direct contact with the human body. Silicone tubing is chemically stable and does not react with human tissue. Silicone tubing that comes into direct contact with the human body must undergo EU ROHS, PASH, and FDA Phthalate 6 PREACH testing.

So don't worry about toxic side effects. Products made from silicone, as long as they're made from legitimate raw materials, are safe to use. Silicone adhesive is used to bond silicone, such as silicone to plastic, silicone to metal, and silicone to glass. It's not ingested, so it's certainly not toxic.

II. Usage Scenarios
Silicone is a widely used material, and so is silicone glue. It's a common feature of everyday life (silicone tableware, silicone water cups, water bottles, silicone accessories, etc.).

Silicone glue is also used in silicone phone cases and waterproof seals for large equipment.
III. How to Determine the Safety of Silicone Glue?

Check for Certification Marks:

Environmental Certifications: Such as the China Ten-Ring Certification and the EU CE Certification.

Food/Medical Certifications: Such as the FDA and ISO 10993.
Industrial safety certifications: such as RoHS (Restriction of Heavy Metals) and REACH (Registration of Chemicals).
Read the product instructions:
Confirm the curing time, applicable temperature range, and contraindications.
Avoid using inferior products containing "triphenylbenzenes" (benzene, toluene, and xylene) or formaldehyde.
Precautions:
Wear a mask and gloves during curing to avoid direct contact with uncured adhesive.
Areas exposed to children or pets should be thoroughly cured before use.
IV. Summary
General: Neutral silicone adhesive is non-toxic after curing and is safe for use in both domestic and industrial settings.
Special considerations: Acidic adhesives require ventilation during the curing period; industrial-grade adhesives require confirmation of ingredient safety; and medical/food-grade adhesives require strict adherence to certification standards.
Recommendation: Prioritize products from reputable brands like Kanglibang and strictly follow the instructions to minimize risk.