Find HS Code and trade information for 冷凝胶

冷凝胶

冷凝胶 (lěngníngjiāo) refers to a type of gel material exhibiting a phase transition from liquid to semi-solid state at relatively low temperatures. This transition is typically triggered by a decrease in temperature, causing the gel to thicken or solidify. The process often involves physical changes rather than chemical reactions, though some formulations may incorporate chemical gelling agents.

Material Composition

Cold gels are primarily composed of water and a gelling agent. Common gelling agents include:

• Polysaccharides: These are natural polymers derived from plant sources, offering biocompatibility and biodegradability. Examples include:
  • Carrageenan: Extracted from red algae, forming firm, brittle gels.
  • Agar-Agar: Also from red algae, creating more elastic gels.
  • Gelatin: Derived from animal collagen, sensitive to temperature and pH.
  • Xanthan Gum: Produced by bacterial fermentation, providing viscosity and stability.
  • Gellan Gum: Another bacterial fermentation product, forming strong, clear gels.
• Synthetic Polymers: These offer controlled gelling properties and can be tailored for specific applications. Examples include:
  • Poly(vinyl alcohol) (PVA): Forms gels through physical crosslinking.
  • Poly(ethylene glycol) (PEG): Often used in biomedical applications.
• Other Materials: Certain proteins and lipids can also contribute to cold gel formation.

Purpose & Function

The primary function of cold gels is to provide a temperature-responsive material that changes its physical state. This characteristic lends itself to a wide range of applications. Key purposes include:

• Drug Delivery: Encapsulating drugs within the gel matrix for controlled release. The gel can release the drug upon warming to body temperature.
• Cosmetics & Personal Care: Used in masks, creams, and lotions for cooling, soothing, and moisturizing effects.
• Food Industry: Used as thickening agents, stabilizers, and to create unique textures.
• Biomedical Applications: Scaffolds for cell culture, wound dressings, and tissue engineering.
• Cryopreservation: Protecting cells and tissues during freezing.

Usage Scenarios

• Cooling Packs: Providing localized cooling for injuries or discomfort.
• Facial Masks: Delivering cooling and hydrating ingredients to the skin.
• Injectable Gels: Used in cosmetic procedures for volume enhancement or tissue augmentation.
• Cell Encapsulation: Protecting cells during storage or transplantation.
• Wound Healing: Maintaining a moist environment and promoting tissue regeneration.

Common Types

• Thermoreversible Gels: These gels exhibit a reversible phase transition with temperature changes, solidifying upon cooling and liquefying upon warming. Most cold gels fall into this category.
• Hydrogels: These gels contain a high proportion of water, offering biocompatibility and a soft, pliable texture. Many cold gels are hydrogels.
• Particulate Gels: These gels contain solid particles dispersed within a liquid matrix, forming a network structure.
• Chemical Gels: These gels are formed through chemical crosslinking of polymer chains, offering greater stability but potentially lower biocompatibility.

根据您提供的“冷凝胶”信息，以下是根据参考资料中找到的相关HS编码及其详细说明：

• 3503.00.55.10：

  • 35章：动物、植物或微生物脂肪油及其分馏物；皂化或水解的脂肪油及其分馏物；水化的脂肪油及其分馏物。
  • 00：动物、植物或微生物脂肪油及其分馏物。
  • 55：明胶（包括矩形（包括方形）片状明胶，无论是否经过表面处理或着色）及其衍生物；鱼胶；其他动物来源的胶类，不包括3501章的酪蛋白胶类。
  • 10：其他可食用明胶。
  • 关税详情：基础关税：2.8¢/kg + 3.8%，加征关税：7.5%，2025.4.2后加征关税：30.0%。总税率：2.8¢/kg + 3.8%+37.5%。

• 3503.00.55.50：

  • 35章：动物、植物或微生物脂肪油及其分馏物；皂化或水解的脂肪油及其分馏物；水化的脂肪油及其分馏物。
  • 00：动物、植物或微生物脂肪油及其分馏物。
  • 55：明胶（包括矩形（包括方形）片状明胶，无论是否经过表面处理或着色）及其衍生物；鱼胶；其他动物来源的胶类，不包括3501章的酪蛋白胶类。
  • 50：其他。
  • 关税详情：基础关税：2.8¢/kg + 3.8%，加征关税：7.5%，2025.4.2后加征关税：30.0%。总税率：2.8¢/kg + 3.8%+37.5%。

• 9602.00.10.40：

  • 96章：其他制品。
  • 02：雕刻材料和这些材料制成的物品；蜡、硬脂酸、天然树胶或天然树脂、成型膏制成的物品，以及其他成型或雕刻物品，未在其他地方列明或包括；未硬化的明胶（不包括3503章的明胶）及其制品。
  • 10：未硬化的明胶及其制品。
  • 40：未硬化的明胶及其制品：填充明胶胶囊。
  • 关税详情：基础关税：3.0%，加征关税：7.5%，2025.4.2后加征关税：30.0%。总税率：40.5%。

• 9602.00.10.80：

  • 96章：其他制品。
  • 02：雕刻材料和这些材料制成的物品；蜡、硬脂酸、天然树胶或天然树脂、成型膏制成的物品，以及其他成型或雕刻物品，未在其他地方列明或包括；未硬化的明胶（不包括3503章的明胶）及其制品。
  • 10：未硬化的明胶及其制品。
  • 80：未硬化的明胶及其制品：其他。
  • 关税详情：基础关税：3.0%，加征关税：7.5%，2025.4.2后加征关税：30.0%。总税率：40.5%。

请注意，根据您提供的“冷凝胶”信息，以上HS编码是根据参考资料中找到的最相关选项。具体选择哪个HS编码取决于冷凝胶的材料、用途和制成工艺。

重要提示：

• 如果冷凝胶是可食用的明胶，请选择3503.00.55.10或3503.00.55.50。
• 如果冷凝胶是未硬化的明胶制品，请选择9602.00.10.40或9602.00.10.80。
• 请根据实际情况仔细核对产品的材料和用途，以确保选择正确的HS编码。