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High Quality - Poly(Methylvinylether/Maleic Acid)Copolymer – Y&R
These polymers are free acid form of the copolymer of Methylvinyl ether and Maleic Anhdride,in liquid form.Avalilable in a range of Molecular weights with tunable rheological properties.Those polymers soluble in water,serve as excellent film formers and bioadhesive/mucosal adhesives. Key Technical Parameters of Solution Form: Types YR-VM/MASP13 YR-VM/MASP70 YR-VM/MASP125 YR-VM/MASP250 Appearance Slightly hazy viscous liquid pH Value(5% in water) 1.5~2.5 1.5~2.5 1.5~2.5 1.5~2.5 Acti... -
Professional China - N-Octyl-2-Pyrrolidone – Y&R
N-Octyl-2-Pyrrolidone,N-Octyl-Pyrrolidone,1-Octyl-2-Pyrrolidone,NOP,is colorless to light yellow transparent clear liquid with faint odor,It is highly active,safe and innoxious.It has a high boiling point,a high flash point and very low vapor pressure,very low solubility to water but is soluble to variety of organic solvents and reduce surface tention.N-Octyl-2-Pyrrolidone is a speciality pyrrolidone with solvent and low-foam surfactant characteristics Key Technical Parameters: Appearance... -
Best Quality - Chlorphenesin – Y&R
Chlorphenesin has a broad spectrum and excellent performance of antibacterial ability, has a good inhibitory effect on Gram-negative bacteria and Gram-positive bacteria, it is used for broad-spectrum fungi, antibacterial agents; cosmetics and personal care Formulated with a universal preservative to improve the anti-corrosion performance of the system. Key Technical Parameters: Appearance White or almost white powder Assay 99% min. Melting Point 77~825℃ Clarity of soluti... -
China Wholesale - Polyquaternium-1 – Y&R
Polyquaternium-1 is a detergent-type preservative derived from BAK,also named as Polidronium Chloride,PQ-1.Polyquaternium-1 is formulated in the mid of 1980s by Alcon as a preservative for contact lens storage solutions.Nowadays,it is being increasingly used as a presverative in ophthalmic drops for glaucoma, artificial tear solutions and top cosmetic formuations. Polyquaternium-1 is a cationic polymer prepared by the controlled polymerization of dimethylamine and bis-dichlorobutene, end capp... -
Top Suppliers - Biotin – Y&R
Biotin also named as D-Biotin,Vitamin H,Vitamin B7,it is white or almost white,crystaline powder or colourless crystals,very slightly soluble in water,alcohol,practicaly insoluble in acetone.It dissolves in dilute solutions of Alkali Hydroxides. Key Technical Parameters Appearance White or off-white powder Identifications (A,B,C) Conforms to USP Assay 97.5%~100.5% Impurities Individual Impurity:not more than 1.0%Total Impurities:not more than 2.0% Specific Rotation +89°~+93° Resi... -
Hot Sale - Polyquaternium-51 – Y&R
Polyquaternium-51 is a biomimetic moisturizing polymer designed to mimic the structure of phospholipid membrane. It has unique amphiphilic structure and could anchor into the stratum corneum, exhibiting an adaptive moisturizing effect on skin. In the meanwhile, Polyquaternium-51 protects the skin from environmental aggressions: Improving the barrier effect, and reducing the Trans Epidermal Water Loss.Polyquaternium-51 is a biocompatible copolymer that has the same structure as important cell ... -
Famous Suppliers - Beta- (NMN) – Y&R
Beta- (“NMN”, “NAMN”, and “β-NMN”) is a nucleotide derived from ribose and . Like riboside, NMN is a derivative of niacin, and humans have enzymes that can use NMN to generate adenine dinucleotide (NADH). Key Technical Parameters: Appearance White to yellowish powder NMN Purity by HPLC 98%min Water content(KF) ≤5% Residual solvent EtOH ≤ 2.0% Sodium content ≤ 1.0% Pb ≤0.5ppm Hg ≤0.5ppm Cd ≤0.5ppm Total microbial count ≤750cfu/g E.c... -
Hot Sale - DL-Panthenol 50% – Y&R
DL-Panthenol 50% is a great humectants,it’s a colorless to pale yellow viscous liquid,soluble in water,alcohol,propylene glycol.DL-Panthenol is also known as Provitamin B5,which plays a key role in the human intermediary metabolism.Deficiency of Vitamin B5 can result in many dermatological disorders.DL-Panthenol is applied in almost all types of cosmetic preparations.DL-Panthenol cares hair,skin and nails.In skin,DL-Panthenol is a deep penetrative humectants.DL-Panthenol can stimulate the gro... -
Professional China - Anhydrous Lanolin USP Grade – Y&R
Lanolin is a pale yellow, tenacious, unctuous substance obtained from the wool of sheep, having a faint characteristic odor.Lanolin is classified chemically as a wax, being a complex mixture of naturally occurring esters and polyesters of 33 high molecular weight alcohols (principally sterols) and 36 fatty acids comprise an approximately 50/50 ratio.Lanolin is an extremely effective emollient in restoring and maintaining the all important hydration(moisture balance) of the stratum corneum and... -
Hot Sale - Povidone – Y&R
Povidone is homopolymer of 1-vinyl-2-pyrrolidone (Polyvinylpyrrolidone),freely soluble in water,in ethanol (96%),in methanol,and other organic solvents,veryslightly soluble in acetone.It’s a hygroscopic polymer ,supplied in white or creamy white powder or flakes,ranging from low to high viscosity & low to high molecular weight,which characterized by K Value,with excellent hygroscopisty,film-forming,adhesive,chemical stability and toxicological safeness characters. Key Technical Parameters... -
Leading Manufacturer – Phloretin – Y&R
Phloretin is a dihydrochalcone,a type of natural phenol. Phloretin is a member of the class of dihydrochalcones that is dihydrochalcone substituted by hydroxy groups at positions 4, 2′, 4′ and 6′. It has a role as a plant metabolite and an antineoplastic agent. It derives from a dihydrochalcone. Phloretin is a plant polyphenol with a dihydrochalcone structure. It is present in the peel and root bark of succulent fruits such as apples and pears, and in various vegetable juice... -
Famous Suppliers - N-Ethyl-2-Pyrrolidone – Y&R
N-Ethyl-2-Pyrrolidone is a colorless to slightly yellowish liquid with a faint amine odor, as an aprotic and highly polar organic solvent is completely miscible with water . Key Technical Parameters: Appearance Colorless to Slightly yellow liquid Purity 99.5% min. Water 0.1% max. g-Butyrolactone 0.1% max. Amines 0.1% max. Colour(APHA) 50 max. Applications: Used as Intermediates for the synthesis of agrochemicals, pharmaceuticals, textile auxiliaries, plasticizers, polymer so...
