Phenyl Dichlorophosphate Supplier: High Purity, In Stock?

Phenyl Dichlorophosphate: what buyers are really specifying in 2025

If you work in phosphorus chemistry, you’ve almost certainly handled Phenyl Dichlorophosphate at some point. It’s a deceptively simple reagent that shows up in pharma phosphorylation steps, high-index flame-retardant systems, and specialty plasticizers. I’ve toured plants that make it; the vibe is the same everywhere—clean, dry lines, disciplined nitrogen blanketing, and a lot of respect for moisture control.

Quick context and industry pulse

Demand for Phenyl Dichlorophosphate is nudging upward with two tailwinds: fire-safety regulations in electronics and the steady stream of API routes that prefer P(V) reagents over harsher alternatives. Buyers tell me color stability and hydrolyzable chloride are the real pain points. Surprisingly, logistics reliability (and CoA speed) now ranks as high as purity.

Product snapshot

Name: Phenyl Dichlorophosphate
Molecular formula: C6H5Cl2O2P | MW: 210.98 | CAS: 770-12-7
Origin: Jinling Mansions No.106-1 East Yuhua Rd., Shijiazhuang, Hebei, China
Typical packages: 25 kg fluorinated HDPE, 250 kg steel drum, ISO tank on request
Storage/service life: dry, nitrogen-blanketed; ≈ 12 months unopened at 5–25°C

Typical specifications (buyer-grade detail)

Parameter	Spec (≈ values)	Method / Standard
Appearance	Colorless–pale yellow liquid	Visual, ASTM D1544 (ref.)
Assay (GC)	≥ 99.0%	GC, ICH Q2(R2) validated
Moisture	≤ 0.10%	Karl Fischer, ASTM E203
Acidity (as HCl)	≤ 0.05%	Titration
Color (APHA)	≤ 50	ASTM D1209
Density @25°C	≈ 1.38–1.40 g/cm³	ASTM D4052
Boiling point	≈ 95–105°C (10 mmHg)	Literature/verified

How it’s made (condensed process flow)

Materials: phosphorus oxychloride (POCl3), phenol (anhydrous), base/scavenger (e.g., pyridine), dry solvent (optional). Method: controlled addition of phenol to POCl3 at low temp, HCl capture, then hold, polish filtration, and vacuum finishing. QA/QC: GC purity, KF moisture, chloride/acidity checks, color, density. Batches are released by ISO/IEC 17025 accredited methods where available. Service life is driven mainly by moisture ingress, so closures and nitrogen are non‑negotiable.

Where it’s used

Pharma: phosphorylation of alcohols/phenols; prodrug phosphate esters
Agrochemicals: intermediate to aryl phosphates
Flame retardants and plasticizers: precursor to aryl phosphate triesters
Electronics resins: higher LOI epoxy systems via phosphate modifiers

Advantages we keep hearing about

Consistent GC assay and low APHA, even across seasons, according to repeat buyers
Fast CoA and flexible packaging—small thing, but it matters
REACH-ready dossiers and GHS-aligned SDS, which saves regulatory back‑and‑forth

Vendor comparison (real-world, indicative)

Vendor	Purity spec	REACH/SDS	MOQ	Lead time	Customization
Sincere Chemicals	≥99.0% (GC)	REACH-ready; GHS SDS	25 kg	7–14 days	Color, moisture, packaging
Global Trader A	≥98.5%	SDS only	200 kg	3–5 weeks	Limited
Regional Distributor B	≈98–99%	GHS SDS	Drum	Stock‑dependent	Packaging only

Customization and testing

Options include moisture ≤0.05%, APHA ≤20, inhibitor‑free grades for pharma routes, and tailored stabilizer packages for long sea freight. Test data are issued with batch CoA; methods are validated to ICH Q2(R2). Many customers say the Karl Fischer and GC are reported within hours of filling—small touch, big confidence.

Two quick case notes

Electronics resin maker: using Phenyl Dichlorophosphate as an intermediate, downstream aryl phosphate raised LOI by ≈2 points while holding viscosity—win for a UL94 V‑0 target.
Pharma CDMO: switch to low‑APHA grade trimmed silica clean‑up, net +3–4% step yield. Honestly, not dramatic—but repeatable.

Compliance note: Phenyl Dichlorophosphate is corrosive; GHS pictograms/UN transport rules apply. Ensure dry handling, local exhaust, and compatible elastomers.