Products Description
Lemon Yellow (Tar trazine or Lemon yellow), also known as malachite yellow, acidic pale yellow, food yellow No. 4, is an acidic synthetic colorant, a water-soluble azo-type colorant. Its molecular formula is C16H9N4Na3O9S2, with a relative molecular mass of 534.37. It is a yellow or orange-yellow powder, odorless, soluble in water, soluble in glycerol and propylene glycol, slightly soluble in ethanol, and insoluble in fats. It has good acid resistance, heat resistance, salt resistance, light resistance, and poor oxidation resistance. It is slightly red when exposed to alkali, and fades when reduced. Lemon Yellow can be prepared by the condensation method and the heavy ammoniation-azo method. It can be used for coloring beverages, candies, pastries, jelly, ice cream, medicines and other foods to improve the appearance of the food. The maximum dosage in pharmaceuticals is 0.1g/kg, and the maximum allowable daily intake as set by WHO is 7.5mg/kg. It is also used as a coloring agent in medicine and daily cosmetics, dyeing wool and silk, and manufacturing pigments.
Long-term animal experiments on lemon yellow have shown that it is highly safe and is widely permitted for use by various countries. It is considered the least toxic synthetic pigment and has an ADI of 0-7.5 mg/kg. A small amount of lemon yellow will be digested and excreted by the human body, but it has no nutritional value. Long-term consumption of food with excessive lemon yellow may have certain impacts on human health. The "Food Safety National Standard - Use Standard of Food Additives" (GB 2760-2024) stipulates that lemon yellow is not allowed to be used in dried vegetable products. The allergic symptoms of lemon yellow include rash, asthma and vascular edema, and it has potential life-threatening risks.
Products Parameters
Product Parameters
Chemical Name: Tartrazine
CAS Number: 1934-21-0
Molecular Formula: C₁₆H₉N₄Na₃O₉S₂
Appearance: Orange-yellow to yellow powder or liquid concentrate
Color Value (E¹%1cm): ≥550 (measured by acid solution)
Solubility: Easily soluble in water (≥15g/100mL at 20℃), slightly soluble in ethanol
pH Range Applicable: 3.0 - 8.0 (Excellent acid and alkali resistance)
Shelf Life: 24 months (Sealed and protected from light, stored at ≤25℃)
Products Advantages
✅ High Purity and Safety: Subjected to strict evaluation by FDA and EFSA, heavy metals (lead ≤ 10 ppm, arsenic ≤ 3 ppm) comply with GB 31650-2019.
✅ Strong Coloring Ability: Achieve vivid yellow with a low addition amount (recommended dosage 0.001 - 0.1%).
✅ Excellent Stability: Resistant to high temperatures (≤ 150℃) and light exposure, suitable for baking and sterilization processes.
✅ Flexible Adaptability: Supports direct powder injection or pre-mixed solution form, compatible with sugar coating, gel, and other complex matrices.
✅ Compliance Assurance: Provides two specifications of food grade and cosmetic grade (CI 19140), and Halal/Kosher certification is optional.
Products Application
Food and Beverages
Candy and Snacks: Hard candies, soft candies, bright yellow jelly
Bakery Products: Decorations for cakes, bright colors in cookie fillings
Drinks: Energizing yellow for sports drinks, carbonated beverages
Seasonings: Enhancing color for mustard sauce, seasoning powder
Industrial Uses
Medicines: Coating for tablets, identifying color for oral liquids
Cosmetics: Gentle coloring for soap, body wash
Pet Food: Visual enhancement for canned food, granular grains
Products Details
Packaging and Storage
Powder: 1kg per bag (aluminum foil bag), 25kg per barrel (with moisture-proof film lining)
Liquid: 10kg per barrel (30-50% aqueous solution, HDPE packaging)
Storage Conditions: Avoid light exposure, dry and well-ventilated, and keep away from oxidants.
Company Qualification
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