Ammonium Oxalate – Οξαλικό αμμώνιο (Ammonium Oxalate)
Code CTS-R0200218CAS 6009-70-7CPV 24300000-7

Ammonium Oxalate

Ammonium oxalate monohydrate 99.8% for the protective conversion of calcium carbonate into calcium oxalate on marble, stone and wall paintings.

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Information for public bodies & procurementThe CPV code is indicative — confirm it against the tender notice.
ManufacturerCTS
AvailabilityMade to order · 1–3 weeksfrom the manufacturer (Europe)
CPV code24300000-7Basic inorganic and organic chemicals
Quotations for public bodiesdimosio@artrestorationsupplies.grreply within 1 working day
Manufacturer codeR0200218

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Ammonium oxalate monohydrate ((NH4)2C2O4·H2O, CAS 6009-70-7) from C.T.S. Applied in poultices, it reacts with the calcite of the substrate to form a thin, insoluble, acid-resistant layer of calcium oxalate (whewellite/weddellite) – the «ammonium oxalate treatment» for protecting marble and wall paintings.

  • Purity: 99.8%; white crystals
  • Solubility: 48 g/l in water (20 °C); pH 6.5 (4% solution)
  • Uses: 3–5% poultices in deionised water (with cellulose/paper pulp) for a few hours to passivate carbonate surfaces of marble, limestone and wall paintings
  • Supplied by: C.T.S. S.r.l. (Italy)

Safety: Harmful if swallowed and in contact with skin (UN 2811, toxic solid); wear gloves, goggles and mask. Safety data sheet (SDS) available on request.

Made to order · imported from abroad. This product is ordered from the manufacturer. Import shipping costs may be added to the price; we confirm them by email before payment.

  1. You place the order online, without payment.
  2. We confirm prices, availability and shipping cost and send you the final amount.
  3. You pay by bank transfer and send the payment slip quoting the order number.
  4. Shipping by BOX NOW, ACS or freight carrier in Greece, FedEx or DHL abroad. You can see the tracking number in your account.

Public bodies follow their own procurement procedure. Request a quote.

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