CAS 1314-56-3

Phosphorus pentoxide

五氧化二磷

P2O5MW 141.944 g/molHS 280910 UN1807 · Class 8 · PG II

From the buying desk

Class 8 corrosive. Reacts violently with water releasing heat and forming phosphoric acid. Ships in sealed HDPE drums with desiccant. Phosphate fertiliser industry is the largest global sink, but most P2O5 is consumed at the producing site rather than shipped. Specialty trade volume small.

Import Card

Before you order phosphorus pentoxide from China, see its register listing, the duty, anti dumping cases and a supplier check on one card, each with its source and date.

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Identifiers

Synonyms
P2O5, Phosphoric anhydride, Diphosphorus pentoxide
Formula
P2O5
Molecular weight
141.944 g/mol
SMILES
O=P(=O)OP(=O)=O
InChIKey
DLYUQMMRRRQYAE-UHFFFAOYSA-N
HS code (6-digit)
280910

Transport and hazard profile

Transport classification, UN number UN1807, IMDG Class 8, Packing Group II.

GHS hazard statements, Danger. H-codes, H314, H335. Refer to the substance SDS Section 2 for the full classification.

US and Australian rules for Phosphorus pentoxide

Read from the official lists by CAS 1314-56-3. Screening only: check the source before you ship, store or report.

California Prop 65

No entry

No entry for CAS 1314-56-3 in the OEHHA list dated July 31, 2026.

Open the tool · Official source

OSHA exposure limit

No entry

No entry for CAS 1314-56-3 in 29 CFR 1910.1000 Tables Z-1 to Z-3.

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Australian exposure standard

No entry

No entry for CAS 1314-56-3 in the Safe Work Australia workplace exposure standards.

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CERCLA reportable quantity

No entry

No entry for CAS 1314-56-3 in 40 CFR 302.4 as read on September 24, 2026.

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EPCRA Tier II threshold

No entry

Not on the Extremely Hazardous Substances list, so the general 10,000 lb Tier II threshold applies where an SDS is required.

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Regulatory profile across 5 jurisdictions

Verified against ECHA, US EPA TSCA Inventory, MEE China IECSC, NIER K-REACH, and AICIS AIIC. Last verification 2026-04-30. Confirm with the regulator portal before any shipping decision.

EU REACH
Listed
US TSCA
Listed
China IECSC
Listed
Korea K-REACH
Listed
Australia AICIS
Listed

Look up other substances at the REACH / TSCA cross-jurisdiction checker.

Common applications

  • · Drying agent (laboratory)
  • · Phosphate fertiliser intermediate
  • · Optical glass
  • · Catalyst manufacture

Typical Chinese supplier geography

Major Chinese capacity sits in Yunnan, Sichuan, Guizhou. Coastal producers (Shandong, Jiangsu, Zhejiang) typically dominate export volume because of port access; inland producers (Inner Mongolia, Xinjiang, Shaanxi) compete on raw-material cost but add inland-rail or trucking cost to reach the coast.

Sourcing documentation chain

Every shipment of Phosphorus pentoxide from China should include a per-batch COA, a current SDS per GB/T 17519 on the China side and the destination jurisdiction's standard on the import side, a packing list, a bill of lading, and a certificate of origin plus an MSA China DG packing certificate. For Incoterms reference see FOB, CIF, and CFR.

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Read next

Where this substance shows up across Sourzi

Referenced in

9 pages across the Sourzi moat

This term shows up in 5 regulatory pages, 4 chemical parks. Sample backlinks per content type below.

Regulatory (5)

Plus 2 more regulatory pages.

Park (4)

Plus 1 more chemical parks.

Free download

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