I am getting a lot of email about these products
being advertised internationally.
If one of you science /chemical types can please evaluate them for the forum., we might save some people some money.
Will the chemicals that these products are made from adversly affect the coins / banknotes that may be stored in them?
What about the chemical reaction of the product with heat?
All information below is copied from various advertisementson the web.
Fire Proof/Resistant Storage bagsDocument Type and Number:
United States Patent 3637000
Abstract:
A fire-resistant bag for carrying valuable documents or money. The bag has a multilayer sidewall with plies which are separated by heat-insulating air spaces. Each ply includes a sheet of asbestos or similar heat-insulating material, and one ply has a metal-foil outer face for reflecting heat. A zipper closure is provided, and the zipper is protected from direct exposure to flame by multilayer lips or flaps on the bag which cover the zipper. Snap fasteners secure the zipper cover in place when the bag is closed.
MMF Fire Guard Locking Courier Bag - Courier Bag - 18" x 18" - 7" Gusset - Cordura Plus - 1 Each - Burgundy

Locking Courier Bag protects contents through vehicle fire. Multiply protection with rugged, water-resistant 1000 denier laminated Cordura shell outside and fire-resistant liner inside. Temperature rating is 1600 degrees Fahrenheit.

Fire-Resistant Courier Sacs
Designed to protect your original documents and valuable data in the event of an automobile or truck fire.
Guards against fire damage until the contents can be safely retrieved.
Laboratory tested to withstand high temperatures typical of automobile fires.
Tough, durable multi-layer construction. Fire barrier core is a carbon layer with fibers that carbonize when exposed to intense heat or flame. combined with a rugged outer layer of ArcoDuck II™ or Cordura® Plus fabric.
Arcolock-7® keeps bag contents secure. Fire-Resistant Nomex® Zipper Tape, developed for applications like firefighters' clothing, provides heat resistance along the zipper length.
Available in Satchel or Briefcase Styles. On Briefcase style Arcolock-7® is shielded by fire barrier-lined flap. On Satchel style Arcolock-7® and zipper are shielded by fire barrier full flap.

The BlazePak Fire Resistant Document Wallet. Billed as a cheaper alternative to a fire proof safe, this 40 x 30 cm pouch is water repellent and fire resistant to 400 degrees C. It's made of aluminised polyester backed with glass needlemat fibre, whatever that is. Do note the use of the word 'resistant', rather than 'proof', though, won't you? It's subtle but probably important if you're thinking about sticking your bearer bonds in one. Especially if you've got a wooden house. £29.95.
This brand new fire resistant wallet is an exceptionally affordable and hassle free solution # Made of heat-reflective aluminised polyester backed with thermally-insulated glass needlemat fibre, Blazepak is water repellent, fire resistant to 400ºC and has undergone extensive testing in real fire situations here in the UK # Essential protection for wills, passports, birth and marriage certificates and, of course, your household insurance policy

These legal-size fiberglass fire resistant document bags are a perfect way to add another layer of protection and safety to your most valued documents. Simply tuck your valuables inside the 9" x 14.5" fire-resistant bag. Many people slip the bag inside their safes, metal desk drawers or other logical locations for safe-keeping.
Withstands heat up to 1000 degrees Fahrenheit! Great for the protection of vital documents such as deeds, passports, birth certificates, cash, degrees, family history, photos, etc.