硫酸銅殺菌剤製造（ボルドー液）

今もブドウ畑を守る140年以上前の殺菌剤

Agriculture & Fertilizers Global Industrial Scale $900 million

概要

Copper sulfate is one of the oldest and most widely used fungicides in agriculture, first applied as Bordeaux mixture (copper sulfate + lime) in French vineyards in 1882 to control downy mildew (Plasmopara viticola). Copper ions disrupt fungal cell membrane integrity and inhibit spore germination. Copper-based fungicides remain essential in organic agriculture, where synthetic fungicides are prohibited. Annual agricultural use of copper compounds exceeds 300,000 tons (as CuSO4 equivalents), with viticulture, potato, and fruit production as primary applications.

化学プロセス

Copper sulfate pentahydrate is produced by dissolving copper metal or copper oxide in dilute sulfuric acid (10-30%) with air oxidation at 50-80 degrees C. The saturated solution is crystallized by cooling to produce large blue triclinic crystals. For Bordeaux mixture, copper sulfate solution is mixed with slaked lime (Ca(OH)2) just before application to form the active copper hydroxide precipitate.

Cu + H2SO4 + 1/2O2 -> CuSO4 + H2O (dissolution with air oxidation)
CuSO4 + Ca(OH)2 -> Cu(OH)2 + CaSO4 (Bordeaux mixture formation)

原材料

  • Copper metal (Cu) or copper oxide (CuO) — Copper smelting or scrap recycling (Copper source)
  • Sulfuric acid (H2SO4) — Contact process (Dissolving acid)
  • Calcium hydroxide (Ca(OH)2) — Lime kiln (slaked lime) (Neutralizing agent for Bordeaux mixture)

最終製品

  • Copper sulfate pentahydrate (CuSO4.5H2O) — Fungicide, algicide, root killer, animal feed supplement (Blue crystals, 25% Cu content)
  • Bordeaux mixture (Cu(OH)2/CaSO4) — Foliar fungicide for grapes, potatoes, citrus (Alkaline copper hydroxide suspension)
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Environmental Impact

Repeated copper fungicide applications lead to copper accumulation in vineyard soils (100-1,500 mg Cu/kg vs. natural 20-30 mg/kg), which is toxic to soil organisms, particularly earthworms. The EU has restricted copper use to 4 kg/ha/year (averaged over 7 years) to limit accumulation. Copper runoff can impact aquatic ecosystems.

安全性の考慮事項

最新のイノベーション

Nano-copper formulations reduce the amount of copper needed per application by improving coverage and adhesion.
Copper-resistant rootstocks and biological control agents may reduce dependence on copper fungicides.
Fixed copper formulations (copper hydroxide, copper oxychloride) provide more consistent release.

生産規模

300000

トン/年

$900 million

市場価値

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Frequently Asked Questions

What industry uses 硫酸銅殺菌剤製造（ボルドー液）?
硫酸銅殺菌剤製造（ボルドー液） is used in the agriculture & fertilizers sector at global industrial scale scale.
What process is involved in 硫酸銅殺菌剤製造（ボルドー液）?
Copper sulfate pentahydrate is produced by dissolving copper metal or copper oxide in dilute sulfuric acid (10-30%) with air oxidation at 50-80 degrees C. The saturated solution is crystallized by cooling to produce large blue triclinic crystals. For Bordeaux mixture, copper sulfate solution is mixe
What is the economic significance of 硫酸銅殺菌剤製造（ボルドー液）?
硫酸銅殺菌剤製造（ボルドー液） has a market value of $900 million and annual production of 300,000 tons.
What is the environmental impact of 硫酸銅殺菌剤製造（ボルドー液）?
Repeated copper fungicide applications lead to copper accumulation in vineyard soils (100-1,500 mg Cu/kg vs. natural 20-30 mg/kg), which is toxic to soil organisms, particularly earthworms. The EU has restricted copper use to 4 kg/ha/year (averaged over 7 years) to limit accumulation. Copper runoff
What raw materials are used in 硫酸銅殺菌剤製造（ボルドー液）?
The main raw materials include: Copper metal (Cu) or copper oxide (CuO), Sulfuric acid (H2SO4), Calcium hydroxide (Ca(OH)2).