1,2-Dimethoxyethane (CAS 110-71-4): storage and disposal

Fire risk from the vapour sets its location, a ventilated fire-resistant cabinet with spill containment, but the reproductive hazard should shape who works with it. Staff planning a pregnancy or expecting a child need to know where it is held, so it should not sit unlabelled in a shared solvent cupboard. Containers should carry opened dates, with a review 12 months after opening. Group members tend to pass a bottle between projects until nobody knows its history, and that is the moment to record who owns it. Hydrogen peroxide, permanganate, dichromate, chlorate, hypochlorite and chromium trioxide must stay apart, as this ether can ignite or explode with them. If anyone chills it, only a spark-free refrigerator will do.

Normal stock is a clear, colourless, thin liquid. Abnormal is harder to spot, as it gives few visual signs while peroxides build, so an unremarkable appearance is no proof of safety. The cap and label do most of the telling: a softened or heavily pierced septum shows repeated air exposure, and a missing opened date leaves the bottle's age unknown. Crystals around the cap or in the liquid, a viscous layer or a failed seal all point to serious trouble. If a bottle is old, undated or shows any warning sign, do not move it, do not open it, and get a specialist assessment. Peroxide testing is for competent staff only, and nobody should test a bottle already showing warning signs.

Forms explosive peroxides on storage.

This can form peroxides as it ages, especially after opening. Age and the opened date matter more than appearance, so a container with no opened date should be treated as old.

Review after 12 months: Review interval after opening from the cited peroxide former lists, not an expiry date from a manufacturer. Class C and all other chemicals are left null.

This does not go through our standard collection route. It is arranged by manual enquiry, and never goes down the drain or into general waste.

Code 16 05 06* normally applies, but the code does not settle how it goes, because this ether is not quoted online and not accepted through the online quote path. Age cannot be judged from a web form, so a manual enquiry comes first, with the opened date, cap type and how full it seems. A store assessment is recommended, and a competent chemist decides in person, or an explosives or emergency specialist if warning signs are present. Do not open it, move it to a tidier shelf, or try to make it safe. It must never go into a sink or drain. Group labs clearing a departing member's bench should list each bottle separately, as a shared history is rarely a known one.

Usually held as: neat.

Part-used bottles and full containers are both fine. Tell us the size and how many, and an estimate is enough for a first price.