Is silicone adhesive safe?

The toxicity of silicone adhesives (silicone sealants or silicone glues) depends on their specific components and application scenarios, requiring a case-by-case discussion:

I. Components Determine Toxicity

Neutral Silicone Adhesives:
Before Curing: May release trace amounts of volatile organic compounds (VOCs), such as alcohols or ketones, but generally have low toxicity and meet environmental standards (such as FDA certification or EU REACH regulations).

After Curing: Forms a stable silicone rubber, chemically inert, virtually non-toxic, heat-resistant, and corrosion-resistant, commonly used in food contact applications (such as kitchen sealants) or medical fields (such as catheter bonding).

Main Components: Silicone resin, crosslinking agents, catalysts (such as organotin or platinum compounds), fillers, etc.

Acidic Silicone Adhesives:
Before Curing: Releases an acidic odor, which may irritate the respiratory tract or eyes, but generally does not pose a serious health risk.

After Curing: Acidic substances evaporate completely, leaving non-toxic residues, but ventilation is necessary to avoid short-term irritation.

Main Components: Contains acidic substances such as acetic acid as curing catalysts.

Industrial-grade silicone adhesive may contain additives such as plasticizers and mildew inhibitors. Some additives may contain heavy metals or harmful substances.

Toxicity risk: It is necessary to confirm whether the product has passed safety certifications (such as RoHS and REACH). Avoid prolonged contact with uncured adhesive.

Silicone adhesive is non-toxic and has no side effects. Food-grade and medical-grade silicone tubing can come into direct contact with the human body. The chemical properties of silicone tubing are stable and will not react with human tissue. "Silicone tubing that comes into direct contact with the human body must pass EU RoHS, PASH, and FDA phthalate 6 PREACH tests.

Therefore, don't worry about toxic side effects. Products made from genuine raw materials used in legitimate production processes are safe to use. Silicone adhesives are used to bond silicone, such as silicone to plastics, metals, and glass. Since they are not ingested, they contain no toxins.

II. Usage Scenarios
Silicone is a widely used material, and silicone adhesives are no exception. They are commonly found in consumers' daily lives (silicone tableware, silicone cups, kettles, silicone jewelry, etc.),

and are also used in silicone phone cases and for waterproofing and sealing large equipment.

III. How to Determine if Silicone Adhesive is Safe?
Check certification marks:
Environmental certifications: such as China's Ten-Ring Certification, EU CE certification.
Food/Medical certifications: such as FDA, ISO..." 10993.

Industrial safety certifications: such as RoHS (Restriction of Heavy Metals), REACH (Registration of Chemicals).

Read the product instructions: Confirm the curing time, applicable temperature range, and contraindications.

Avoid using inferior products containing "three benzenes" (benzene, toluene, xylene) or formaldehyde.

Protective measures: Wear a mask and gloves during curing and avoid direct contact with uncured adhesive.

Areas that may be in contact with children or pets must be completely cured before use.

IV. Summary
General situation: Neutral silicone adhesives are non-toxic after curing and can be safely used in household and industrial settings.

Special situation: Acidic adhesives require adequate ventilation during the curing period; industrial-grade adhesives require confirmation of ingredient safety; medical/food-grade adhesives require strict adherence to certification standards.

Recommendation: Prioritize products from well-known brands like Kanglibang and strictly follow the instructions to minimize risks.