Acid Yellow 99

Azelaic Acid Powder Chemical Formula CHCOH Appearance White powder Source Naturally found in wheat rye and barley Functions of Azelaic Acid Cosmetic Grade Oil Control Azelaic acid helps to inhibit oil secretion making it beneficial for oily or acneprone skin Prevents Hyperkeratosis It prevents skin hyperkeratosis helping to maintain smoother healthier skin Industrial Grade Polyester Flexibility Azelaic acid improves the flexibility of unsaturated polyester enhancing material properties Synthetic Fiber Production It is used in the production of synthetic fibers Electrolytic Capacitors Azelaic acid or its salts when added to the electrolyte of electrolytic capacitors can significantly increase their service life

Azelaic Acid has antibacterial properties and can be used as a food preservative. Use in mouthwashes is conducive to the prevention and treatment of dental caries, and use in soap can prevent the surface of soap from cracking. It has good permeability to the skin, and it can increase the absorption function of the skin when used in cream cosmetics. Azelaic Acid has a variety of medicinal effects and can be used in skin plasters. It has skin lightening and whitening functions.

Name: 2-hydroxy-6-naphthoic acid Alias: 2,6 acid; 2-naphthol-6-carboxylic acid; 6-hydroxy-2-naphthoic acid; 6-hydroxy-2-naphthoic acid CAS NOï¼?16712-64-4 Molecular formula: c11h7o3 Molecular weight: 187.172 Product quality standard: Appearance characte Light yellow powder Content 99% 2-naphtholâ?¤0.10% 2,3-acidâ?¤0.10% melting point243-245�°C Loss on dryingâ?¤0.30% heavy metalâ?¤20ppm Application: used in medicine, liquid crystal, paint, etc. Packing: 25kg / cardboard barrel, or according to customer requirements

4-Hydroxybenzoic acid Chemical Name:4-Hydroxybenzoic acid Trade Name:p-oxybenzoic acid Molecular Formula:C7H6O3 Molecular Weight:138.12 CAS No.:99-96-7 Properties:white odorless crystalline powder, easily soluble in hot water and alcohols, aethers and acetone, slightly soluble in cold water and benzene, insoluble in carbon bisulfide; relative density is 1.46 Use: Can be used as antiseptic, intermediate of dyes, pharmaceuticals; as main material of liquid crystal polymers; as material of pesticide intermediate Specification Item Specification Polymer Grade Technical Grade Appearance white crystal powder white crystal powder Purity(on dry base) % 99.6 99.0 Melting Point 214-217 212-216 Odor odorless odorless Solubility Clear and transparent clear and transparent Loss on Drying % 0.20 0.50 Color(Pt-Co) 10 40 Ash % 0.02 0.15 Sulfate(SO42-) 0.01 0.05 Chloride(Cl-) % 0.005 0.02 Phe% 0.01 0.10 Salicylic Acid % 0.02 0.10 4-Hydroxyisophthalic Acid(HIPA) ppm 500 / Insolubles in Metha ppm 50 / Potassium(K+) ppm 5 / Sodium (Na+) ppm 5 / Iron (Fe) ppm 5 / Ca2++Mg2+ppm 5 /