CAS 1305-62-0 · REACH · European Union

Calcium hydroxide (hydrated lime) under REACH

Ca(OH)2 · 氢氧化钙

Status: Registered. Calcium hydroxide is fully registered under REACH at the highest tonnage band (>1,000,000 tonnes/year). **Distinguishing pattern: hydration of quicklime (CaO + H2O) production route + flue-gas desulfurisation (FGD) plus water plus wastewater treatment plus construction (mortar / lime plaster) plus steel-slag treatment plus food-grade Ca(OH)2 for sugar refining and dairy plus dental impression plaster downstream chains + sister to calcium oxide / quicklime (CAS 1305-78-8) lime chain (NEW combined).** Reg (EC) 1272/2008 harmonised: Skin Irrit. 2 (H315) plus Eye Dam. 1 (H318) plus STOT SE 3 (H335 respiratory irritation). NOT SVHC. NOT Annex XIV. NO active EU AD case on Chinese-origin calcium hydroxide currently (verify against EUR-Lex https://eur-lex.europa.eu/ before invoicing).

Calcium hydroxide is fully REACH-registered with **moderate hazard profile** (Skin Irrit. 2 plus Eye Dam. 1 plus STOT SE 3 respiratory). NOT SVHC, NOT Annex XIV. NO active EU AD. **FGD plus water-treatment plus construction plus steel-slag plus food-grade plus dental** downstream chains. Major Chinese producers: Sinoma multi-site, Anhui Conch Cement Group lime sister capacity, Shandong Chongqi Lime, Hebei Yanshan Lime. Production: hydration of quicklime. Sister to calcium oxide / quicklime (CAS 1305-78-8) lime chain.

Listing and threshold

Substance Calcium hydroxide (hydrated lime) (CAS 1305-62-0), Ca(OH)2
Regime EU Regulation (EC) No 1907/2006: Registration, Evaluation, Authorisation and Restriction of Chemicals
Jurisdiction European Union (EU-27 plus EEA: Iceland, Liechtenstein, Norway)
Status Registered
Tonnage threshold Registration required for any importer or manufacturer placing >1 t/year on the EU market

Classifications under this regime

  • Harmonised CLP classification: Skin Irrit. 2 (H315), Eye Dam. 1 (H318), STOT SE 3 (H335) (verify against ECHA C&L Inventory https://echa.europa.eu/information-on-chemicals before relying)
  • Signal word: DANGER. GHS pictograms: GHS05 + GHS07
  • IARC: not evaluated for calcium hydroxide as a discrete agent (verify against https://monographs.iarc.who.int/list-of-classifications)
  • NOT subject to Drug Precursors or Explosives Precursors scheduling
  • ADR / RID transport classification: NOT regulated for industrial-grade Ca(OH)2 powder

Restrictions and conditions of use

  • NOT on REACH Annex XIV (verify against ECHA https://echa.europa.eu/authorisation-list)
  • NOT classified as SVHC (verify against ECHA https://echa.europa.eu/candidate-list-table)
  • NOT subject to any Annex XVII restriction at industrial-grade level
  • NO active EU AD case on Chinese-origin calcium hydroxide currently (verify against EUR-Lex https://eur-lex.europa.eu/ before invoicing)
  • NOT in CBAM Phase 1 scope (CBAM Phase 1 covers cement clinker; verify scope of lime products against Reg (EU) 2023/956 Annex I before relying)

Importer obligations

A non-EU producer cannot register directly under REACH. The EU importer of record must hold a registration or rely on an Only Representative (OR). Major Chinese producers: Sinoma multi-site, Anhui Conch Cement Group lime sister capacity, Shandong Chongqi Lime, Hebei Yanshan Lime, multiple regional limestone-quarry operators (verify each producer-site pair against the producer's public website before relying on a specific plant).

Required documents

  • REACH registration number on EU side
  • SDS reflecting H315 / H318 / H335 classification
  • CLP labelling with GHS05 + GHS07 + DANGER
  • Customs entry HS code 252220 (slaked lime)
  • No ADR documentation required for industrial-grade Ca(OH)2 powder

Common compliance traps

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

  • **Flue-gas desulfurisation (FGD) plus water plus wastewater treatment plus construction (mortar / lime plaster) plus steel-slag treatment plus food-grade Ca(OH)2 for sugar refining plus dental impression plaster downstream chains**
  • NOT SVHC, NOT Annex XIV, NO active EU AD
  • Major Chinese producers: Sinoma multi-site, Anhui Conch Cement Group lime sister capacity, Shandong Chongqi Lime, Hebei Yanshan Lime; China dominates global lime capacity (verify percent-of-global share against ICIS or USGS Mineral Commodity Summaries before quoting; prior reports cited China at well above 50 percent of global ~430 Mt/yr lime capacity)
  • Production: hydration of quicklime (CaO + H2O); upstream limestone calcination at ~900 to 1100 degrees Celsius
  • Sister to calcium oxide / quicklime (CAS 1305-78-8) lime chain

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for calcium hydroxide (hydrated lime), see the CAS 1305-62-0 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the calcium hydroxide (hydrated lime) cornerstone hub covers the full sourcing chain.

For the structure and history of REACH, see the REACH 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.

Read next

Cross-jurisdiction profile and sourcing references

Referenced in

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