Chemical Products

Dipotassium fluorescein, also recognized as fluorescein dipotassium or Uranine K, is a highly water-soluble potassium salt derivative of fluorescein. It appears as a vibrant orange-red crystalline powder that dissolves readily in water to yield a brilliant yellowish-green fluorescent solution under visible and UV light. This distinct fluorescence property makes it exceptionally valuable across various specialized

Polyvinylpyrrolidone (PVP, CAS 9003-39-8) is a water-soluble synthetic polymer of N-vinylpyrrolidone with repeat unit (C₆H₉NO)ₙ. It is valued for biocompatibility, chemical stability, low toxicity and film-forming capability. Available in various molecular-weight grades, it functions as a binder, stabilizer, thickener and dispersing agent.

Optical Brightener VBL, also chemically identified as Fluorescent Brightener 85, is a specialized stilbene-derivative fluorescent whitening agent. It is widely engineered for industrial applications requiring enhanced visual brightness and light reflectance. By absorbing invisible ultraviolet radiation within the solar spectrum and re-emitting it as a vibrant blue-violet fluorescence, this compound effectively masks natural yellowish tinges

Sodium Picramate is the sodium salt of picramic acid (2-amino-4,6-dinitrophenol), appearing typically as a dark red crystalline powder or concentrated salt solution. Functioning primarily as a direct non-oxidative hair coloring agent, it possesses specialized chromophoric properties that allow it to impart deep, stable shades directly onto the hair shaft through surface pigment deposition rather than

Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium salt (PTSA, CAS 59570-10-0) is an organic fluorescent compound with a pyrene core substituted by four sulfonate groups, formula C₁₆H₆Na₄O₁₂S₄ and MW 610.43. It exhibits intense blue fluorescence under UV excitation and is used as an inert fluorescent tracer in industrial aqueous systems. Note: the tetrasodium salt is also commonly associated with

1-Methylamino-4-bromoanthraquinone is a substituted anthraquinone derivative characterized by a polycyclic aromatic quinone core substituted with a bromine atom at the C-4 position and a methylamino group at the C-1 position,. It usually appears as a brown to dark brown solid with high melting stability and strong light absorption properties. The presence of the reactive bromine

Acid Red 52, widely recognized as Sulforhodamine B sodium salt or CID 9916275, is a synthetic xanthene-class dye characterized by its striking fluorescent magenta or pink coloration. and a molecular weight of, this water-soluble compound exhibits exceptional tinting strength and high visibility under daylight conditions. It is manufactured via precise organic synthesis protocols to meet

Iron oxide yellow pigment (CAS 51274-00-1), also known as C.I. Pigment Yellow 42, is a hydrated iron(III) oxide pigment, commonly represented as Fe₂O₃·H₂O or FeO(OH). It offers exceptional lightfastness, weather resistance and chemical stability, and is insoluble in water and organic solvents. Thermal exposure above about 80°C initiates dehydration toward a red ferric oxide phase.

Solvent Green 7, commonly recognized as pyranine or trisodium 8-hydroxypyrene-1,3,6-trisulfonate, is a high-purity, water-soluble fluorescent synthetic dye. It presents as a vibrant yellowish-green powder that dissolves effortlessly in aqueous environments without forming unwanted precipitates. The compound exhibits remarkable chemical stability across a broad pH spectrum and glows with an intense yellowish-green fluorescence, particularly under alkaline

Rhodamine 6G, also identified as Basic Red 1, is a prominent xanthene-class synthetic dye characterized by its brilliant red-to-pink fluorescence and high quantum yield. Available typically as dark reddish-brown crystals or powder, it dissolves readily in water and various polar organic solvents like ethanol and methanol. The molecule possesses an exceptional absorption and emission cross-section,

2,7-Anthraquinone disulfonic acid (CAS 84-49-1) is a disulfonated anthraquinone derivative with formula C₁₄H₈O₈S₂ and MW 368.34. The two strongly hydrophilic sulfonic acid groups on the aromatic core confer exceptional water solubility, enabling its use in aqueous reaction environments rather than traditional organic solvent systems.

2-Methylanthraquinone is an organic polycyclic aromatic compound belonging to the quinone family, featuring a central anthraquinone core substituted with a methyl group at the second position. It typically presents as a yellow to light-brown or purplish crystalline solid, exhibiting high thermal stability and very low solubility in aqueous media while dissolving readily in polar organic

2-Amino-4-chloro-5-methylbenzenesulfonic acid, commonly known in the colorant industry as 2B acid, is an aromatic sulfonated aniline derivative containing chloro and methyl ring substituents. It typically appears as a light-colored crystalline powder or paste, featuring high polarity and strong water solubility due to the presence of the sulfonic acid group, making it exceptionally useful in aqueous

N-(2-Cyanoethyl)-N-methylaniline is an organic compound classified as an aromatic nitrile and a substituted aniline derivative, featuring a molecular formula of. It typically manifests as a clear liquid ranging in color from light yellow to orange. As a versatile chemical building block, this substance contains both an aromatic tertiary amine and a reactive cyanoethyl moiety. These

Perylene-3,4,9,10-tetracarboxylic Diimide (often abbreviated as PTCDI) is a high-performance organic semiconductor and pigment precursor characterized by its rigid, highly conjugated polycyclic aromatic ring structure. This distinctive molecular framework confers exceptional chemical, thermal, and photochemical stability, allowing the compound to withstand extreme operational conditions. Its strong absorption profile and stable redox behavior make it a fundamental