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Fine Chemical Intermediates

Specialty chemical intermediates for pharma, agrochemicals and polymer AO.

supplies fine chemical intermediates including diphenylamine derivatives, phenolic antioxidants, heterocyclic compounds and bromine chemicals used in agrochemicals, pharmaceuticals and polymer stabilization.

Polyphenolic AO polyphenolic AO for polymer/rubber
Alkylated DPA / Alkylated DPA diphenylamine series
Compound AO/22 compound AO for polyolefins
Bromine chemicals for pharma intermediates
Fine chemical synthesis test tubes
✓Amine antioxidants and DPA derivatives
✓Phenolic AO intermediates — p-Cresol, BHT
✓Compound AO and masterbatch grades
✓Bromine chemicals — HBr, NaBr, Melamine
Chemical analysis laboratory
Fine intermediates synthesis Fine chemical synthesis
VANFLEX®
Fine Chemical Intermediates
Full catalog below

Full Product Catalog — Fine Intermediates

All products available under VANFLEX® brand. SDS, TDS and CoA on request.

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Fine Chemical Intermediates
ProductChemical Name (CAS)Description & Application
Diphenylamine (DPA)Diphenylamine (122-39-4)Core intermediate for synthesis of alkylated DPA antioxidants for rubber, lubricants and agrochemicals. Propellant stabilizer and pharmaceutical intermediate. Largest source of DPA downstream products.
BLEAcetone-Diphenylamine condensate (68412-48-6)General purpose rubber AO. Thermal oxidation and flex-cracking resistance. Staining — dark-colored rubber goods. NR, SBR, BR and blends requiring long-term thermal stability.
BLE-WAcetone-Diphenylamine condensate, water-dispersibleWater-compatible version of BLE for latex and water-based rubber systems. Same thermal protection as BLE without solvent handling.
DDAStyrenated Diphenylamine (68442-68-2)Non-staining styrenated DPA AO. Thermal and oxidative protection in rubber and plastic. Light-colored elastomers, polyolefins and SBS/SIS thermoplastic elastomers.
Alkylated DPA4,4′-Bis(α,α-dimethylbenzyl)diphenylamine (10081-67-1)High MW non-staining amine AO. Excellent heat resistance, light stability and low volatility. Wire & cable insulation, neoprene cable sheaths and light-colored elastomeric compounds. Comparable to Naugard 445 / Nocrac CD.
Alkylated DPA4,4′-Bis(α,α-dimethylbenzyl)diphenylamine (10081-67-1)Non-toxic, tasteless, light-colored amine AO for elastomers and plastics. Food-contact rubber, PE/PP masterbatch, PU foam, wire & cable and adhesives. Excellent in neoprene colorful cable sheath and polyether foam.
ODAOctylated Diphenylamine (15721-78-5)Bis-TMB DPA. Very low volatility and migration. Rubber, lubricant additives and industrial applications requiring persistent AO at elevated service temperatures.
Dioctyl DPAP,P-Dioctyldiphenylamine (MW 393.65)Dioctyldiphenylamine amine AO for rubber and lubricant. High-temperature oxidation protection with good compatibility across rubber polymers and base oils.
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ProductChemical Name (CAS)Description & Application
p-Cresol4-Methylphenol (106-44-5)Key industrial intermediate for synthesis of hindered phenol AO (BHT, AO-1076), phenolic tackifier resins and specialty chemicals. Also used in disinfectants, pharmaceuticals and fragrance synthesis.
Polyphenolic AOButylated reaction product of p-cresol and dicyclopentadiene (68610-51-5)Highly effective polyphenolic AO for natural rubber, latex and synthetic elastomers. Non-staining, non-discoloring. High activity and very low volatility. Resistant to extraction by washing and boiling — essential for rubber thread, carpet backing, surgical gloves, medical products and baby goods.
Polyphenolic AO — aqueous dispersionPolyphenolic AO aqueous anionic dispersion — 50% solid, <3μm particle sizePredispersed aqueous dispersion for direct addition to latex systems. No color change or discoloration. Active ingredients ground to <3μm for maximum activity. Latex foam, dipped goods, carpet backing and latex coatings.
Polyphenolic AO — 5% solutionPolyphenolic AO aqueous emulsion — 5% solutionDiluted aqueous emulsion for precise low-level AO addition to water-based rubber systems. Excellent emulsion stability. Carboxylated SBR, NR latex and water-based adhesive formulations.
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ProductTypeDescription & Application
AO-13301,3,5-Trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene (1709-70-2)Trifunctional hindered phenol. Excellent colour stability. Food-contact grades available. PP, PE, ABS and engineering polymers.
Compound AO blendCompound AO blend (amine + phenol)Multi-component AO blends for broad-spectrum protection in PE, PP, elastomers and industrial plastics. Compound AO blend and Compound AO blend differ in ratio and component selection for different application profiles.
Compound Phenolic/Phosphite AO — Series ICompound phenol/phosphite — AO-1010+phosphite equivalentNew high-efficiency multicomponent AO. Superior to B225 series: lower MFR, higher OIT, better long-term thermal stability. PP, PE, EVA polyolefin processing. Performance varies by grade in performance level.
Compound Phenolic/Phosphite AO — Series IICompound phenol/phosphite — polyolefin-optimizedBetter polyolefin compatibility and color vs. Compound AO series. Slightly lower high-temp resistance but superior initial color. Performance varies by grade in performance level.
Polyphenolic AO MB 80%Polyphenolic AO in SBR binder (80% active)Dust-free polymer-bound AO masterbatch. Tack-free, accurate weighing and consistent dispersion vs. liquid Polyphenolic AO. NR, SBR, ABS rubber compounding.
Polyphenolic AO MB 15%Polyphenolic AO in SBR binder (15% active)Low-concentration SBR masterbatch for precise, low-level AO addition in latex-based rubber systems.
Polyphenolic AO MB 45%Polyphenolic AO in EPDM/EVA binder (45% active)EPDM/EVA-bound for heat and oil resistant EPDM compounds. Automotive sealing profiles, hoses and industrial EPDM parts requiring non-staining AO protection.
CDBCCopper Dibutyldithiocarbamate (13927-71-4)Specialty copper DTC functioning as AO, biocide and fungicide. Specialty rubber formulations, antifouling compounds and chemical intermediate. Unique copper-based activity differentiating from zinc DTC AO.
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ProductChemical Name (CAS)Description & Application
PhenothiazinePhenothiazine (92-84-2)Essential polymerization inhibitor for acrylic acid, methacrylic acid, acrylates and vinyl monomers during storage and transportation. Important pharma intermediate for phenothiazine-class drugs (antipsychotics, antihistamines).
TST2,4,6-Trimercapto-S-triazine (17766-26-6)Co-crosslinker in rubber and wire & cable. Heavy metal scavenger (Pb, Cd, Hg, Cu) in wastewater treatment and soil remediation. Adhesion promoter in rubber-metal bonded compounds.
DMTD2,5-Dimercapto-1,3,4-thiadiazole (1072-71-5)Key intermediate for corrosion inhibitors and EP additives in lubricants. Used directly as corrosion inhibitor in metalworking fluids. Corrosion inhibitor feedstock for thiadiazole-based EP additives.
Sodium CyanateSodium Cyanate (917-61-3)Intermediate for urea derivatives, isocyanates and specialty pharmaceuticals. Drugs for Parkinson's, diabetes and epilepsy. Dye intermediate and acrylic polymer catalyst and dye intermediate.
Melamine2,4,6-Triamino-s-triazine (108-78-1)Melamine-formaldehyde resins (laminates, adhesives, coatings), intumescent FR systems (MEL-P) and amino resin production. High nitrogen content provides char-forming FR behavior in intumescent coatings.
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ProductChemical Name (CAS)Description & Application
HBrHydrobromic Acid (10035-10-6)Strong hydrobromic acid for pharmaceutical synthesis, alkylating reagent in fine chemicals and feedstock for brominated FR production. Available in various concentrations.
Ethyl BromideBromoethane (74-96-4)Alkylating agent for N-alkylation and O-alkylation in pharmaceutical and agrochemical API synthesis.
nPB1-Bromopropane (106-94-5)Solvent and synthesis intermediate. Pharmaceutical synthesis reagent and alkylating agent. Alternative to ozone-depleting solvents in precision cleaning.
DBNPA2,2-Dibromo-3-nitrilopropionamide (10222-01-2)Fast-acting broad-spectrum biocide for industrial water treatment, oil field applications and paper mill slimicide. Effective against bacteria, fungi and algae. Rapidly biodegradable after use.
Bronopol2-Bromo-2-nitropropane-1,3-diol (52-51-7)Broad-spectrum antimicrobial preservative. Oil field produced water treatment, paper mills, cosmetics and personal care. Effective against sulfate-reducing bacteria in oil field applications.
NaBrSodium Bromide (7647-15-6)Oil field drilling fluid as clear brine completion fluid providing high density without solids. Pharmaceutical intermediate, water treatment chemical and analytical reagent.
NBSN-Bromosuccinimide (128-08-5)Selective brominating agent for aromatic, benzylic and allylic bromination. Essential in pharmaceutical and fine chemical synthesis for introduction of bromine at specific molecular positions.
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