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Əsas paraqraf:
When it comes to food packaging and utensils, every layer matters — especially the coating that touches what we eat.

İzah paraqrafı:
Surfactants istifadə olunan food-contact coatings play a crucial role in wetting, dispersion, and adhesion. However, their safety, purity, and regulatory compliance determine whether they’re suitable for direct or indirect food applications.

Keçid paraqrafı:
Food-contact coatings must meet the strictest global standards — from FDA (U.S.) və EU Regulation (EC) No 1935/2004, to China GB 9685-2016. This article explores how surfactants are used safely in these coatings, what regulations apply, and how manufacturers like Donghong Kimya ensure product purity and compliance.

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What Are Food-Contact Coatings?

Əsas paraqraf:
Food-contact coatings form the invisible barrier between food and packaging — ensuring protection, hygiene, and longevity.

İzah paraqrafı:
They are polymer-based coatings applied to metal cans, paper, plastic, or glass to prevent corrosion, migration, and contamination. Common examples include can coatings, baking trays, bottle liners, and food storage films.

Functions of Food-Contact Coatings:

• Prevents metal ion migration in cans.
• Improves adhesion between food-safe substrates.
• Provides chemical and moisture resistance.
• Ensures smooth, cleanable, non-reactive surfaces.

To perform these functions efficiently, coatings require surfactants for uniform film formation, pigment dispersion, və substrate wetting — but only those approved for food contact can be used.

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Why Surfactants Are Needed in Food-Contact Coatings

Əsas paraqraf:
In every high-performance coating, surfactants are the invisible enablers of consistency and safety.

İzah paraqrafı:
Surfactants reduce surface tension, allowing the coating to spread evenly and adhere to complex surfaces. In food-contact coatings, they ensure smooth film formation without defects or pinholes that could lead to contamination.

Core Functions of Surfactants in Food-Grade Coatings:

1. Nəmələndirici Maddə: Ensures even spreading on metal, glass, or plastic substrates.
2. Dispersant: Keeps pigments and fillers uniformly distributed.
3. Emulsifier: Stabilizes waterborne resin systems.
4. Yumşaldıcı Agent: Produces uniform, defect-free surfaces.
5. Anti-Corrosive Agent: Creates a protective layer that prevents leaching.

Key Requirement:
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• Additives to be non-reactive və non-migrating under normal use.
• Uyğunluq ilə EU 10/2011 on plastic materials in contact with food.
• Mandatory declaration of residual solvents and monomers.

3. China’s GB 9685-2016 Standard

Lists permitted substances and maximum limits for use in food-contact coatings.
Phosphate esters and related surfactants can be used if they meet the following:

• Residual monomer ≤0.01%.
• Heavy metal content (Pb, Cd, Hg) below detection limits.
• Non-detectable odor or taste transfer.

Donghong Chemical’s phosphate ester surfactants comply with these global standards, ensuring safe use in can coatings, packaging films, and food-grade sealants.

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Safe Surfactant Types for Food-Contact Applications

Əsas paraqraf:
Not every surfactant makes the cut — only ultra-pure, non-toxic, and thermally stable types are suitable for food-contact coatings.

İzah paraqrafı:
Below are the most commonly approved surfactants used in food-safe formulations.

Surfactant Type	Funksiya	Food Safety Property	Example Chemical
Phosphate Esters (AEO-3, NP-Free)	Wetting, dispersing	Biodegradable, thermally stable	Donghong Chemical AEO-3
Fatty Alcohol Ethoxylates (Nonionic)	Emulsifier, leveling agent	Low toxicity, odorless	AEO-9 series
Sorbitan Esters (Natural-based)	Emulsifier	Food-grade, plant-derived	Span/Tween surfactants
Polyether Silicones	Leveling, anti-foam	Chemically inert	Silicone defoamers
Alkyl Polyglucosides (APG)	Eco-friendly surfactant	Derived from natural glucose	cURL Too many subrequests.

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Donghong Chemical’s AEO-3 phosphate ester is ideal for food-contact coatings, meeting stringent purity standards and ensuring zero contamination risk in packaging applications.

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Quality Control and Testing Procedures

Əsas paraqraf:
Every batch of surfactant intended for food-contact use undergoes rigorous testing before it reaches customers.

İzah paraqrafı:
Donghong Kimya maintains a strict QC system aligned with ISO9001 və ISO14001 standards to ensure consistency and safety.

Testing Parameters:

Xüsusiyyət	Standard	Typical Result
Təmizlik (%)	≥99	99.5
Turşuluq Dəyəri (mgKOH/g)	≤0.3	0.2
Rəng (APHA)	≤30	25
Water Content (%)	≤0.1	0.08
Odor / Taste Transfer	None	Pass
Thermal Decomposition (°C)	≥120	130

Analytical Methods Used:

• Gas Chromatography (GC)
• Fourier-Transform Infrared Spectroscopy (FTIR)
• Karl Fischer Moisture Test
• Migration Simulation with Food Simulants

Donghong’s analytical data ensures surfactants remain compliant with FDA, EU, and GB requirements for safe use in food-contact coatings and packaging.

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Environmental and Health Safety Aspects

Əsas paraqraf:
Food-contact surfactants must not only be safe for humans but also for the planet.

İzah paraqrafı:
Modern phosphate esters are biodegradable və free from heavy metals, halogens, and APEOs, aligning with the EU’s green chemistry directives.

Eco-Safety Profile:

• Biodegradability: >90% (OECD 301 Test)
• Toxicity: Non-irritating, non-carcinogenic
• VOC Content: <0.1%
• Wastewater Impact: Minimal; easily treatable

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Məhsul Xüsusiyyətləri:

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• TEP (Trietil Fosfat): cURL Too many subrequests.
• P204: cURL Too many subrequests.

Sertifikatlar:

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• İllik 20,000 ton tutum
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Conclusion: Safety Through Purity and Compliance

Surfactants in food-contact coatings must deliver high performance without compromising health or safety.
Only high-purity, low-odor, and thermally stable phosphate ester surfactants meet the strict global standards for safe use in food packaging and processing environments.

Donghong Kimya ensures full compliance through advanced purification, strict QC, and global certification, making it a trusted partner for manufacturers of food-contact coatings worldwide.

For technical data or product samples:

📧 E-poçt: dohollchemical@gmail.com
📱 WhatsApp: +86 139 0301 4781

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Donghong Chemical — Trusted supplier of phosphate ester surfactants and food-contact coating additives, ensuring purity, performance, and global compliance.