Historical information

Epsom salts (magnesium sulfate) have been used for medicinal and household purposes for centuries.
They were commonly used as a bath soak for muscle relaxation, a laxative, or a remedy for skin conditions.
Glass jars like this were often reused for household storage, particularly in rural areas where repurposing containers was common.
The rusted lid suggests long-term storage, possibly in a pantry, medicine cabinet, or workshop.
The jar itself could be a vintage preserving jar, possibly a Mason or Agee Utility brand, both of which were popular in Australia for food preservation.

Physical description

This is a clear glass jar with a rusted metal screw-top lid, likely used for storing household goods.
The jar appears to be an old preserving jar, with embossed lettering on its surface, possibly identifying a brand or manufacturer.
Inside the jar, there is a white crystalline substance, identified as Epsom salts.
The lid is metal and heavily rusted, indicating exposure to moisture over time.