CAS 7783-28-0 · IECSC · People's Republic of China

Diammonium phosphate under IECSC

(NH4)2HPO4 · 磷酸二铵

Status: Listed. Diammonium phosphate is on the IECSC public portion as a foundational fertiliser. New-substance notification under MEE Decree No. 7 (2010) is NOT required. DAP is NOT on China's Catalog of Hazardous Chemicals (light hazard profile, dust only). DAP is NOT on the Easily-Made Drugs Precursor Catalog. China is the largest global DAP producer (~30% of global capacity, ~16-18 Mt/yr) led by Yunnan Yuntianhua, Guizhou Kailin Phosphate, Sinochem Lantian (Hubei), Hubei Yihua, and Wengfu Group. **Beijing operates a seasonal export-quota system on DAP** to manage domestic agricultural supply, similar to the urea export-license framework.

DAP is comfortably IECSC-listed and NOT on Catalog of Hazardous Chemicals so the export-side regulatory work is operationally light. The structural intelligence layer is destination-market specific: **EU CBAM Phase 1 from 1 January 2026** + EU 2019/1009 cadmium cap are the dominant EU-lane compliance and cost concerns. Beijing seasonal export-quota system + 0% VAT export rebate are domestic Chinese policy signals (food-security similar to urea pattern, distinct from organic-chemical 13% rebate). Major Chinese producers (Yunnan Yuntianhua, Guizhou Kailin Phosphate, Sinochem Lantian, Hubei Yihua, Wengfu Group) all draw on sedimentary phosphate-rock deposits with elevated cadmium content vs Russian / Moroccan igneous alternatives, which structurally disadvantages Chinese DAP in EU compliance and supports the CBAM cost differential. Brazilian SIPEAGRO is the largest single export-market regulatory framework alongside India MOP.

Listing and threshold

Substance Diammonium phosphate (CAS 7783-28-0), (NH4)2HPO4
Regime China Inventory of Existing Chemical Substances (IECSC), administered by the Ministry of Ecology and Environment (MEE)
Jurisdiction People's Republic of China
Status Listed
Tonnage threshold No new-substance threshold applies. No Hazardous Chemicals Operation Permit required (DAP is not on Catalog of Hazardous Chemicals)

Classifications under this regime

  • NOT listed in China's Catalog of Hazardous Chemicals
  • NOT on China's Highly Toxic Chemicals Catalog
  • NOT on the Easily-Made Drugs Precursor Chemicals Catalog
  • GB/T 10205-2009 specification applies for industrial-grade DAP (Chinese national standard)
  • GB/T 10205-2009 covers P2O5 minimum 46%, N minimum 18%, granule size, free water, hardness
  • GACC export classification: HS 31053000 (DAP) or 31055100 (NPK with DAP base)
  • China is largest global DAP producer (~30% capacity); Yunnan, Guizhou, Hubei are the main producing provinces, all served by sedimentary phosphate-rock deposits with elevated cadmium content vs Russian / Moroccan igneous deposits

Restrictions and conditions of use

  • No Hazardous Chemicals Operation Permit required (DAP is not on Catalog of Hazardous Chemicals)
  • No Easily-Made Drugs Precursor Permit required
  • Customs Inspection Order may apply for export consignments
  • **Beijing seasonal export-quota system**: phosphate fertiliser exports tightened during Chinese spring-application season (February to May) to ensure domestic agricultural supply. Quota allocation by GACC and MARA. Quasi-bans imposed 2021-2023 during global fertiliser-price spike
  • VAT export rebate currently 0% for DAP (HS 31053000) per current bulletin (was reduced from 13% to manage exports during 2021-2023 supply crunch); verify before invoicing
  • GB/T 17519 Chinese-language SDS required for domestic distribution
  • Cadmium content monitoring under MARA (Ministry of Agriculture and Rural Affairs) quality-control programmes; sedimentary-rock-derived Chinese DAP carries higher Cd than igneous alternatives
  • EU 2019/1009 Cd cap (60 mg/kg P2O5) is destination-market constraint that shapes Chinese export-market routing

Importer obligations

For Chinese-origin DAP exported abroad, no IECSC obligation falls on the foreign importer. The export-side documentation pack focuses on GACC export quota allocation (where seasonal restrictions apply), spec certificate per GB/T 10205-2009 (P2O5 minimum 46%, N minimum 18%), Chinese-language SDS, cadmium content certification (where destination market requires, especially EU 2019/1009 60 mg/kg P2O5 cap), and CBAM verifier-attested embedded-emissions data (for EU lane from 1 January 2026). Producer-specific phosphate-rock origin matters: Yunnan Yuntianhua, Guizhou Kailin Phosphate, Sinochem Lantian, Hubei Yihua, Wengfu Group all draw on sedimentary deposits with elevated Cd.

Required documents

  • GACC export declaration with HS code 31053000
  • Industrial-grade certificate per GB/T 10205-2009 (P2O5 minimum 46%, N minimum 18%, granule hardness, free water, dust)
  • GHS-compliant SDS in Simplified Chinese per GB/T 17519-2013 (effective 31 January 2014, references UN GHS 4th revised edition; verify against the current version of GB/T 17519 at https://www.codeofchina.com/standard/GBT17519-2013.html)
  • GACC export quota allocation certificate (where seasonal export controls apply)
  • Cadmium content certification (where destination market requires, especially EU 60 mg/kg P2O5 cap)
  • Verifier-attested CBAM embedded-emissions data (EU destination from 1 January 2026)
  • For Brazil destination: SIPEAGRO (Brazilian Ministry of Agriculture MAPA) registration certificate

Common compliance traps

The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.

  • Beijing seasonal export-quota system on DAP is the dominant operational complexity. Quasi-bans 2021-2023 during global fertiliser-price spike disrupted Chinese-origin lanes; quota tightening continues during Feb-May spring-application season
  • 0% VAT export rebate is a Beijing food-security signal (rebate was reduced from 13% to manage exports during 2021-2023 crunch), structurally similar to urea 0% rebate. Verify rebate filing on each shipment as schedules adjust
  • Cadmium content of sedimentary-rock-derived Chinese DAP (Yunnan, Guizhou, Hubei) is structurally higher than Russian / Moroccan igneous alternatives. EU 2019/1009 60 mg/kg P2O5 cap is binding destination constraint; verify Cd content before invoicing EU lane
  • CBAM Phase 1 from 1 January 2026 imposes EU-side embedded-emissions cost on Chinese DAP. Coal-fed Chinese ammonia (~1.5-2.5 tCO2e per tonne DAP) carries materially higher embedded CO2 vs Russian gas-fed alternatives
  • Major Chinese producers: Yunnan Yuntianhua (Yunnan, integrated mine-to-DAP), Guizhou Kailin Phosphate (Guizhou, integrated mine-to-DAP), Sinochem Lantian (Hubei, integrated), Hubei Yihua (Hubei, integrated), Wengfu Group (Guizhou, integrated). Integrated mine-to-DAP cost structure gives ~10-15% cost advantage over merchant-phosphate-rock-fed competitors
  • Beijing strategic phosphate reserve policy: Yunnan and Guizhou phosphate-rock deposits are designated strategic resources; export quota tightening tied to Chinese agricultural-supply-security framing
  • Brazilian SIPEAGRO is destination-specific registration framework not seen in REACH / TSCA / IECSC / AICIS / K-REACH; Brazil is largest single Chinese DAP export market alongside India

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for diammonium phosphate, see the CAS 7783-28-0 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the diammonium phosphate cornerstone hub covers the full sourcing chain.

For the structure and history of IECSC, see the IECSC glossary entry.

Need cross-jurisdiction compliance support on this substance? Run it through the REACH / TSCA / IECSC / AICIS / K-REACH checker, or send us the substance and the destination and we will quote FOB China and CIF / DDP landed including the regulatory work on the destination side.

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Cross-jurisdiction profile and sourcing references

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