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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Toxicological information

Basic toxicokinetics

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Administrative data

basic toxicokinetics in vivo
Type of information:
experimental study
Adequacy of study:
weight of evidence
4 (not assignable)

Data source

Reference Type:
other: internet data base
GESTIS Substance database
German Social Accident Insurance
Bibliographic source:

Materials and methods

Objective of study:
Principles of method if other than guideline:
no information
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Bis(2-chloroethyl) ether
EC Number:
EC Name:
Bis(2-chloroethyl) ether
Cas Number:
Molecular formula:
other: information from radiolabelled material and non-labelled material available.

Results and discussion

Applicant's summary and conclusion

Executive summary:

The GESTIS database contains following statement indicating that BCEE is metabolized by rats.

In inhalative, oral and intraperitoneal studies on rats, BCEE absorbed was metabolized to the level of 50 - 80 % to form thiodiglycolic acid. Further products (each below 10 % of the total metabolites) were identified: 2-chloroethoxyacetic acid, N-acetyl-S-(2-(2-chloroethoxy)-ethyl)-L-cysteine, 1 -(2-chloroethyl)-beta-D-glucopyranosiduronic acid and S-carboxymethyl-L-cysteine. In an oral study with 14C-labelled BCEE on rats, about 12 % of the radioactivity was exhaled as CO2.

Furthermore, it the database contains following statementes:

Respiratory tract:

Rats exposed to BCEE-vapors in a chamber for 18 h absorbed more than 95 % of the amount, which was calculated for the room to be 75 mg. Although no data is available for humans, effective absorption via the respiratory tract is to be assumed.



Apparently, no kinetic studies have been carried out. Based on the high dermal toxicity in tests on rabbits and guinea pigs with the pure grade substance, effective absorbability via intact skin is to be expected. This is also assumed to be true for humans.


Gastrointestinal tract:

Following oral application of 14C-BCEE to rats, about 80 % of the dose was eliminated within 48 hours. From this data, highly effective absorption via the gastrointestinal tract was concluded. Similar results should be expected for humans.