Missing Halogen Data Cost You an Order?-Iota

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News > Dynamic industry > Missing Halogen Data Cost You an Order?

Missing Halogen Data Cost You an Order?

“BYD’s audit requires Cl and Br content reports for all raw materials—your COA doesn’t even include this!” Last week, a silicone supplier nearly lost a multi-million-yuan battery sealant order because it couldn’t provide halogen data on time. Similar cases are surging: CATL, Sunwoda, SVOLT, and other top battery makers now mandate “halogen-free” as a hard entry requirement, specifying Cl < 900 ppm and Br < 900 ppm in all materials.

Many traders still operate under the misconception: “Silicones are organosilicon—they’re naturally halogen-free.” But in reality, halogens can enter via emulsifiers, antioxidants, or even residual catalysts/solvents. For example, chlorosilane byproducts, brominated flame retardant synergists, or halogenated solvent residues can easily push final product Cl/Br levels above limits.

“It’s not that the material itself contains halogens—it’s poor supply chain control,” admitted a battery materials engineer. “We once found a ‘high-purity silicone’ with Cl at 1500 ppm—the source was recycled solvent contaminated with chlorinated hydrocarbons.”

To meet automotive-grade demands, we’ve upgraded our quality system:
✅ All silicones produced without halogenated additives or solvents;
✅ Every batch tested via ICP-MS (Inductively Coupled Plasma Mass Spectrometry);
✅ COAs explicitly state Cl/Br values (in ppm) and declare compliance with IEC 61249-2-21 and battery OEM specs;
✅ Support third-party SGS/CTI halogen-free certification reports for BYD, CATL, and others.

Our halogen-free silicones are already used in EV battery thermal interface materials, cell encapsulants, and module cushioning pads—with customers reporting “first-time audit pass, zero supplemental documents.”

In the new energy supply chain, compliance isn’t a bonus—it’s your ticket to play.
Don’t let a missing halogen report become the reason you lose your biggest customer.

Request our Automotive-Grade Halogen-Free Silicone Compliance Package (including ICP-MS templates, declarations, and supply chain controls) to breeze through Tier 1 battery audits and secure high-value orders.

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