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Our Phosphorus Derivatives Range

Six high-purity phosphorus derivatives manufactured exclusively in-house at our Sayakha GIDC facility, Gujarat, India. Each product ships with a batch-specific COA and GHS-aligned SDS.

Phosphorus Trichloride (PCl₃) — Darshan Fine Chem Private Limited PCl₃

Phosphorus Trichloride

CAS 7719-12-2 · UN 1809

A colorless fuming liquid and one of the most important phosphorus chlorides in industrial chemistry. PCl₃ is the primary route to phosphorous acid and a workhorse intermediate in agrochemical and pharmaceutical synthesis.

Key Applications

Agrochemical intermediates Phosphorous acid production Pharmaceutical intermediates Chlorinating agent Plasticizer & flame-retardant intermediates
Appearance Colorless fuming liquid
Assay ≥ 99.5%
Molar mass 137.33 g/mol
Boiling point 76 °C
Density (20 °C) 1.574 g/cm³
Packing 200 kg MS Drum · ISO tanks · bulk tanker
Phosphorus Oxychloride (POCl₃) — Darshan Fine Chem Private Limited POCl₃

Phosphorus Oxychloride

CAS 10025-87-3 · UN 1810

A colorless fuming liquid and a key intermediate in chemical synthesis. POCl₃ is the principal building block for phosphate esters and a critical reagent in pharmaceutical and dye intermediate manufacturing.

Key Applications

Phosphate ester synthesis Flame retardants & plasticizers Pharmaceutical intermediates Dye intermediates Chlorination & dehydration reagent
Appearance Colorless fuming liquid
Assay ≥ 99.5%
Molar mass 153.32 g/mol
Boiling point 105–106 °C
Density (20 °C) 1.645 g/cm³
Packing 50 kg HDPE Carboys · 250 kg HDPE Drums · Tanker Load
Phosphorus Pentachloride (PCl₅) — Darshan Fine Chem Private Limited PCl₅

Phosphorus Pentachloride

CAS 10026-13-8 · UN 1806

A white to pale-yellow crystalline solid and a highly efficient chlorinating agent in organic chemistry. PCl₅ converts acids to acid chlorides and serves emerging demand in lithium battery electrolyte chains.

Key Applications

Chlorinating agent Acid chloride production API intermediates Battery electrolyte chain Organic synthesis
Appearance White to pale-yellow crystalline solid
Assay ≥ 99.0%
Molar mass 208.22 g/mol
Behaviour Sublimes on heating (≈ 160 °C)
Packing 40 kg Open Mouth Drum
Phosphorus Pentoxide (P₂O₅) — Darshan Fine Chem Private Limited P₂O₅

Phosphorus Pentoxide

CAS 1314-56-3 · UN 1807

A white deliquescent crystalline powder and one of the most powerful dehydrating agents available to industry. P₂O₅ is also the direct precursor for polyphosphoric acid manufacture.

Key Applications

Dehydrating agent & desiccant Polyphosphoric acid production Pharmaceutical synthesis Gas & solvent drying Specialty esters
Appearance White deliquescent powder
Assay ≥ 98.5%
Molar mass 141.94 g/mol (as P₂O₅)
Melting point ≈ 340 °C (sublimes ≈ 360 °C)
Packing 50 kg open mouth drum
Triphenyl Phosphite (TPP) — Darshan Fine Chem Private Limited P(OC₆H₅)₃

Triphenyl Phosphite

CAS 101-02-0 · Non-hazardous

A clear liquid / crystalline organic phosphorus compound widely used as a polymer stabilizer, antioxidant, and chemical intermediate across specialty chemical and plastic processing industries.

Key Applications

Polymer stabilizer & antioxidant PVC secondary stabilizer Flame retardant synthesis Specialty chemical intermediate Plasticizer additive
Appearance Clear, colorless to pale straw liquid / crystal
Assay ≥ 99.0%
Molar mass 310.29 g/mol
Boiling point ≈ 360 °C
Packing 50 kg HDPE Drum · 250 kg HDPE Drum
Polyphosphoric Acid (PPA) — Darshan Fine Chem Private Limited Hₙₒ₂PₙO₃ₙₒ₁

Polyphosphoric Acid

CAS 8017-16-1 · UN 3264

A clear, viscous liquid and a versatile cyclization and dehydration reagent. PPA is essential in pharmaceutical heterocycle synthesis and widely used in surfactants, asphalt modification and pigment processing.

Key Applications

Cyclization & dehydration reagent Pharmaceutical synthesis Surfactants & phosphate esters Asphalt modification Pigment & dye processing
Appearance Clear, viscous liquid
Content 105–118% (as H₃PO₄ equivalent)
P₂O₅ equivalent ≈ 76–85%
Packing 35 / 50 kg HDPE carboys · 300 kg drums

Need a custom specification or packing?

We manufacture to customer-specific requirements for assay, impurity profile and packaging. Send your specification for a manufacturability review.