Overview
Chocolate color paste is a pre-dispersed pigment system designed to deliver consistent brown shades across industries. Unlike powdered colorants, it offers superior mixing efficiency and eliminates dusting issues. Formulations vary between water-based (for beverages, dairy) and oil-based (for chocolates, cosmetics), with some versions meeting FDA/EC food-grade standards. Modern variants use natural extracts (e.g., caramel, cocoa) or synthetic dyes like Brown HT (E155). Industrial grades may contain additives for UV resistance or thermal stability, crucial for plastics and coatings applications.
Physical and Chemical Properties
The paste typically exhibits a viscosity of 500-2,000 cP, ensuring easy pumpability without sedimentation. pH stability ranges from 3-9 depending on the carrier medium, making it compatible with acidic (e.g., soft drinks) or alkaline systems (e.g., soaps). Lightfastness ratings of 7-8 (on the Blue Wool Scale) are common for premium grades. Key advantages include high pigment loading (15-40% by weight) and low VOC content (<50 ppm in eco-friendly versions). Solvent-free variants are increasingly demanded for sustainable product formulations.
Main Applications
In food manufacturing, it colors chocolate-flavored products, baked goods, and meat substitutes. Cosmetic applications include liquid foundations, hair dyes, and lipsticks where precise shade matching is critical. Industrial uses cover PVC cables, synthetic leather, and toy manufacturing. The automotive sector employs heat-stable versions (up to 300°C) for polymer components. Recent innovations include nano-dispersed pastes for transparent packaging films and digital printing inks, expanding its versatility.
Safety and Storage
Food-grade pastes require compliance with regional regulations (e.g., EU No 1333/2008, FDA 21 CFR 73). Allergen-free certifications (e.g., gluten, nut traces) are essential for sensitive applications. Industrial grades may contain preservatives like potassium sorbate (0.1-0.5%). Storage in HDPE drums with nitrogen blanketing prevents oxidation. Shelf life averages 12-24 months unopened; post-opening, use within 6 months is recommended. Freezing must be avoided as it causes irreversible separation.
B2B Procurement Guide
Bulk buyers should request technical datasheets specifying: pigment concentration (typically 20-30%), particle size (<5 µm), and heavy metal content (<10 ppm). For global supply chains, verify REACH/China GB standards alignment. Sample testing should assess compatibility with your base formulation under processing conditions (e.g., 180°C extrusion). MOQs range from 25kg (premium grades) to metric ton quantities (industrial grades), with drum/tote packaging options. Leading manufacturers include Chr. Hansen, Sensient, and domestic suppliers like Zhejiang Runtu.
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