AMSTERDAM- Spain was on track to attract record demand for a 10-year bond it is selling via a syndicate of banks on Wednesday.

Investors put in orders of over 130 billion euros ($158 billion) for the bond due April 2031 which will price at 4 basis points over Spain's benchmark bond due October 2030, Refinitiv capital markets news service IFR reported.

If that level of demand holds up it will be the highest Spain has ever received for a bond sale, topping the 97 billion euros of orders it garnered for another 10-year bond last April. urn:newsml:reuters.com:*:nL5N2CA2VA

The sale is also set to see one of the highest levels of demand ever for a single bond across Europe, nearing the 145 billion euros of orders the European Union received for a 10-year bond last October. urn:newsml:reuters.com:*:nL8N2HB23F

Spain hired BBVA, Citi, HSBC, JP Morgan, Santander and Societe Generale to arrange the sale, according to a memo seen by Reuters on Tuesday.

($1 = 0.8214 euros)

(Reporting by Yoruk Bahceli; Editing by Pravin Char) ((Yoruk.Bahceli@thomsonreuters.com; +44 20 7542 7571; Reuters Messaging: yoruk.bahceli@thomsonreuters.com))