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Rare earth Praseodymium neodymium oxide
Product name: Praseodymium neodymium oxide
Appearance: Grey or brownish powder
Formula：(PrNd)2O3
Mol.wt.618.3
Purity: TREO≥99%
Particle size: 2-10um
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High Purity 99.9% Erbium Oxide CAS No 12061-16-4
Name:Erbium Oxide
Formula: Er2O3
CAS No.: 12061-16-4
Purity:2N5（Er2O3/REO≥ 99.5%）3N（Er2O3/REO≥ 99.9%）4N （Er2O3/REO≥ 99.99%）
Pink powder, insoluble in water, soluble in acid.
Uses：Mainly used as additive in the yttrium iron garnet and nuclear reactor control material, also used in the manufacture of special light and absorb the infrared glass, also used glass colorant.
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4,4′-Dihydroxybenzophenone | CAS 611-99-4 | High Purity 99%
4,4’-Dihydroxybenzophenone is an organic compound belonging to the benzophenone family, characterized by two hydroxyl (–OH) groups attached to the benzene rings. It is primarily used as a UV stabilizer and absorber, effectively protecting various materials such as plastics, coatings, and cosmetics from ultraviolet radiation
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4,4′-Dimethoxybenzophenone | CAS 90-96-0 | High Purity 99.5%
4,4′-Dimethoxybenzophenone CAS 90-96-0 advantage
99.5 % minimum purity → minimizes by-products in high-end UV-filter synthesis.
Ultra-low moisture ≤0.20 % → protects moisture-sensitive photopolymer catalysts.Sharp melting range 142–145 °C → simplifies DSC quality checks and hot-melt extrusion.
Bright white crystalline powder → ideal for color-critical cosmetic and coating applications.
REACH, TSCA & IECSC pre-registered → speeds up regulatory submissions in EU, US, and Asia. -
4,4′-Dimethylbenzophenone CAS 611-97-2 | White Crystalline Powder 99 % Supplier
4,4′-Dimethylbenzophenone (CAS 611-97-2) is a di-methylated aromatic ketone engineered for high-performance photochemistry and pharmaceutical synthesis. Our premium grade is supplied as a free-flowing white crystalline powder with 99 % minimum purity, ultra-low moisture content, and a sharp melting range that ensures batch reproducibility and seamless downstream processing.
≥99 % Purity – minimizes side reactions in photopolymerization and API synthesis.
Tight Melting Range 92–96 °C – simplifies QC protocols and ensures consistent energy input in UV-curing lines.
Moisture ≤0.3 % – protects moisture-sensitive formulations such as cationic photoinitiator blends.
White, Flowable Powder – ideal for automated powder dosing, tablet compression, and master-batch extrusion.
REACH & TSCA Listed – accelerates regulatory clearance in EU and US markets. -
4-Chloro-4′-hydroxybenzophenone 42019-78-3 | Premium Grade | White Crystalline Powder 99 %
Advantage of our 4-Chloro-4′-hydroxybenzophenone 42019-78-3
Ultra-High Purity 99 %: Minimizes side reactions in UV-filter and pharmaceutical API synthesis.
• Low Moisture ≤0.5 %: Protects moisture-sensitive downstream processes such as Grignard reactions.
• Sharp Melting Range 177–182 °C: Guarantees batch-to-batch reproducibility for quality control labs.
• White Crystalline Powder: Excellent flowability for automated powder dosing systems.
• REACH-Pre-Registered: Streamlines regulatory filings across the EU and beyond. -
4-Hydroxybenzophenone CAS 1137-42-4 | ≥99.0 % Off-White Crystalline Powder | High-Performance UV-Blocker
4-Hydroxybenzophenone (4-HBP, CAS 1137-42-4) is an off-white crystalline powder with ≥99.0 % GC purity, melting point 132–135 °C, and ≤0.30 % loss on drying. The para-hydroxy group delivers strong UV-A/UV-B absorption and hydrogen-bonding reactivity, making it the preferred UV-filter intermediate, antioxidant stabilizer, and pharmaceutical scaffold worldwide. Each batch is vacuum-dried at <50 °C, nitrogen-flushed, and double-sealed to guarantee low moisture, low color, and long shelf life—critical for cosmetic actives, OLED encapsulants, and photopolymer formulations.
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4-Chlorobenzophenone CAS 134-85-0 | 99 % Min White Flake or Powder | UV-Grade Chlorinated Ketone for Photopolymers, Pharma
4-Chlorobenzophenone (CAS 134-85-0) is a white flake or free-flowing powder exhibiting a sharp melting point of 75–77 °C, ≥99 % GC purity, and ≤0.50 % loss on drying. The para-chloro substituent boosts UV absorption, lipophilicity, and chemical robustness, positioning the molecule as a cost-effective photoinitiator, pharmaceutical intermediate, and polymer additive across global markets. Every batch is vacuum-dried at ≤40 °C and double-screened to guarantee low moisture, minimal dust, and exceptional flowability—critical for automated dosing in 3D-printing resins, OLED encapsulants, and UV-curable adhesives.
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4-Phenylbenzophenone (CAS 2128-93-0) – 99 % Min White to-Off-White UV-Grade Ketone for Photopolymers, OLED
4-Phenylbenzophenone (CAS 2128-93-0) is a white-to-off-white crystalline powder with a melting point of 101–103 °C, ≥99 % GC purity, and ≤0.50 % loss on drying. The para-phenyl substitution extends π-conjugation, delivering high molar extinction coefficients and excellent photostability—ideal for UV-curable inks, OLED charge-transport layers, lithium-battery electrolyte photoinitiators, and high-performance polymer stabilizer
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4-Phenoxy-2′,2′-dichloroacetophenone | CAS 59867-68-4 | 99.5 % White Powder
4-Phenoxy-2′,2′-dichloroacetophenone (CAS 59867-68-4) is a bright white, free-flowing crystalline powder with an assay ≥99.5 % (GC). The strategic placement of a phenoxy spacer and geminal dichloroacetyl group imparts electrophilic selectivity, UV stability, and bioactivity synergy, positioning the molecule as the preferred building block for pyrethroid insecticides, antifungal APIs, and high-performance UV-absorber additives
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3-Fluoro-4-methoxyacetophenone (CAS 455-91-4) | ≥99.0 % White-to-Off-White Powder for Precision Synthesis & API Advancement
Fluoro-4-methoxyacetophenone, referenced under CAS 455-91-4, is a white-to-off-white crystalline powder with ≥99.0 % GC purity. The strategic placement of a fluorine atom ortho to the carbonyl and a para-methoxy group delivers enhanced electrophilicity, metabolic stability, and lipophilic balance, making this ketone a high-value scaffold for fluorinated APIs, agrochemical discovery, and OLED material research. Each lot is micronized to ≤100 µm to improve flowability and dissolution kinetics, while double-lined PE bags inside aluminum foil pouches guarantee moisture protection and extended shelf life.
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4-n-Butylacetophenone (CAS 37920-25-5) – 99.0 % min High-Purity Ketone for Pharma, Flavor
4-n-Butylacetophenone, catalogued under CAS 37920-25-5, is a clear to pale-yellow liquid ketone with ≥99.0 % GC purity. Its linear n-butyl chain grants exceptional lipophilicity and thermal stability, making it the preferred intermediate for NSAID synthesis, flavor & fragrance creation, and polymer additive R&D