The company, reeling under a debt pile of $US305 billion ($A423 billion), was due on Wednesday to make a $US47.5 million ($A65.9 million) bond interest payment on its 9.5 per cent March 2024 dollar bond, after having missed $US83.5 million ($A115.9 million) in coupon payments last Thursday.

With liabilities equal to two per cent of China's GDP, Evergrande has sparked concerns its woes could spread through the financial system and reverberate around the world, though worries have eased somewhat after the central bank vowed to protect homebuyers' interests.

The developer's silence on its offshore payment obligations has, however, left global investors wondering if they will have to swallow large losses when 30-day grace periods end for coupons that were due on September 23 and 29.

Some offshore Evergrande bondholders had neither received interest payments nor any communication by the end of Wednesday New York time, said the people familiar with the matter, who declined to be identified due to sensitivity of the issue.

A spokesman for Evergrande did not have any immediate comment. Reuters was unable to determine whether Evergrande has told bondholders what it plans to do regarding the coupon payment due on Wednesday.

The two missed offshore payments come as the company, which has nearly $US20 billion ($A28 billion) in offshore debt, faces deadlines on dollar bond coupon payments totalling $US162.38 million ($A225.31 million) in the next month.

Once China's top-selling developer, Evergrande is now expected to be one of the largest-ever restructurings in the country. It has been prioritising its onshore liabilities amid concerns about its troubles triggering social unrest.

"I can't see there being much willingness to give a fairer outcome to offshore bondholders rather than onshore banks, let alone house buyers and people who have lent onshore through the personal loan structures," said Alexander Aitken, a partner at Herbert Smith Freehills in Hong Kong.

"Of course legally there is also structural subordination from being offshore, which means lenders to Evergrande's onshore subsidiaries get paid before lenders to the parent company or any offshore debt issuer."

Beijing is unlikely to intervene directly to resolve Evergrande's crisis in the form of a bailout, but analysts say it is wary of a messy collapse that could fuel unrest by local investors, suppliers and homebuyers.

Authorities have in recent days prodded government-owned firms and state-backed property developers to purchase some Evergrande assets to reduce such risks.

Some instant messaging groups used by people owed money by Evergrande to organise protests and discuss claims have been blocked on Tencent Holdings' WeChat platform, group members said on Wednesday.

Evergrande said on Wednesday that it would sell a 9.99 billion yuan ($A2.1 billion) stake it owns in Shengjing Bank Co Ltd to a state-owned asset management company.

The bank, one of Evergrande's main lenders, demanded all net proceeds from the sale go towards settling the developer's debts with Shengjing, which had seven billion yuan ($A1.5 billion) in loans to Evergrande as of the first half last year.

Separately, Evergrande's Pearl River Delta business said in a WeChat post on Tuesday that nearly 20 developments in the area have resumed construction. The post showed construction photos of various sites, and said that work resumption had accelerated since Evergrande vowed at the beginning of the month to deliver homes to buyers.

Its main onshore unit Hengda Real Estate Group announced a resolution of an onshore bond coupon payment on September 23 through "private negotiations".

Evergrande's shares opened sharply higher on Thursday, rising as much as 5.21 per cent before reversing course to slump as much as 7.17 per cent. The stock was down five per cent in afternoon trade.

"Regardless of how the debt is restructured, Evergrande shareholders and investors in offshore, USD-denominated corporate bonds will suffer large losses," said Jing Sima, chief China strategist at BCA Research in a note.

Australian Associated Press