Despite the name, Cryophase dry ice packs contain no actual dry ice (solid CO₂) — the name refers to their dry, non-weeping handling characteristics once hydrated, distinguishing them from traditional gel packs that sweat and leak as they thaw. Two formats are manufactured: a 4-ply reusable construction and a 2-ply disposable construction, both built around the same core principle. Food-grade laminated plastic is bonded to a non-woven textile layer, and the two are sandwiched around a super-absorbent polymer core. Add water, and that core swells into a flexible, cohesive gel matrix — pliable enough to cut and shape into irregular cavities even while frozen solid, which is a genuine point of difference from rigid ice blocks.

The active core material is a post-treated anionic polyelectrolyte: sodium polyacrylate copolymer (C3H3NaO2)n, CAS 9003-04-7, also referred to as sodium prop-2-enoate. This same compound, in differently treated form, is used industrially as a food thickening agent — which is precisely why the hydrated gel is classified food-safe and non-toxic rather than merely “safe enough.”

The application range reflects that versatility: household freezer stock for camping and grocery runs, first-aid kits, chilled and frozen freight, and clinical cryotherapy use including post-dental-surgery recovery, tooth extraction aftercare, dermatology, and cosmetic procedures. Because the unhydrated sheet is flat and inert, storage footprint before use is minimal — a single pack weighs under 40 grams dry but expands to a full 1-kilogram gel mass once activated, a 25:1 expansion ratio that materially changes the storage and freight math for any business holding stock. Correctly frozen, the resulting gel mass holds its cold up to seven times longer than the equivalent volume of standard ice, making it a credible substitute for actual dry ice across most commercial cold chain applications — without the handling hazards of CO2 sublimation.

Cryolux Reusable & Disposable Dry ice Packs, Dry ice Sheets & Dry Ice wraps
Ice Replacements that are Flexible when frozen & Cut to size
Cryolux reusable dry ice packs are innovative and reusable gel ice packs that are used as hot and cold packs. Dry ice packs are made in 2 types; the reusable dry ice pack 4ply model and the disposable dry ice pack 2ply model. They are made using the most advanced, cutting-edge technology and process to create an ice replacement that is flexible when frozen and can be cut into different shapes and sizes to pack into tight spots. It consists of multiple layers of FDA approved food grade laminated plastic and non-woven textile which is sandwiched and this encapsulates the polymer in the core which when hydrated with water, gets activated. The core of this ice pack is made with a post treated anionic polyelectrolyte sodium polyacrylate copolymer (C3H3NaO2)n [CAS-9003-04-7] also known as sodium prop-2-enoate. The same material in other treated forms is used as a food additive where it works as a thickening agent hence making the cryolux gel packs food grade and a completely safe and non-toxic option.

Cryolux dry ice packs have an amazing list of applications and as such it makes an ideal product to keep in any household freezer for Camping, Grocery Shopping, and first aid, or any cold chain application including chilled and frozen shipping, cryotherapy for post-dental surgery, tooth extractions, dermatology, and cosmetic procedures. It is a great product that can be stored flat (pre-activation). Hence it takes up very little space and can be hydrated on-demand. Thanks to this amazing technology, Cryolux dry ice packs that weigh less than 40 grams each, when activated with water, can turn into a 1-kilogram gel pack. Hence making these reusable dry ice packs the most cost-effective pack in the market to store and transport. If frozen properly using the best ice pack freezing methods, these Cryolux dry ice packs are formulated to keep cold for up to 7 times longer than the same volume of Ice and can replace dry ice in most commercial cold chain applications.

Filter