Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

ABIOTIC DEGRADATION IN AIR

DIRECT PHOTOLYSIS in air
Diglyme does not absorb light >290 nm (ozone band) and therefore a direct photolysis in air will not occur.

INDIRECT PHOTOLYSIS in air

OH radical induced indirect photolysis of Diglyme can be estimated with US EPA AOPWIN Program estimating low degradation half-life of 0.5 day (24-hr day, 0.5E6 OH/cm3)

 

ABIOTIC DEGRADATION IN WATER


HYDROLYSIS

The ether function of Diglyme can only be cleaved under very acidic conditions. Under environmental conditions (pH 4 - 9) cleavage is unlikely. This was confirmed by a hydrolysis test according to OECD 111 at pH 4, 7 and 9. No transformation was observed after 5 days at 50 deg. C.

 

DIRECT PHOTOLYSIS in water
Diglyme does not absorb light >290 nm (ozone band) and therefore a direct photolysis in water will not occur.

INDIRECT PHOTOLYSIS in water

OH radical induced indirect photolysis of Diglyme can be estimated with US EPA AOPWIN Program estimating low degradation half-life of 0.5 day (24-hr day, 0.5E6 OH/cm3). Therefore Diglyme may also be degraded in water by indirect photolysis if sufficient OH radicals were available.

 

ABIOTIC DEGRADATION IN SOIL

 

DIRECT PHOTOLYSIS in soil

Diglyme does not absorb light >290 nm (ozone band) and therefore a direct photolysis on soil surface will not occur.

INDIRECT PHOTOLYSIS in soil

OH radical induced indirect photolysis of Diglyme can be estimated with US EPA AOPWIN Program estimating low degradation half-life of 0.5 day (24-hr day, 0.5E6 OH/cm3).Therefore Diglyme may also be degraded in soil by indirect photolysis if sufficient OH radicals were available. Due to the low sorption of Diglyme to sewage sludge exposure of soil can be neglected. Therefore this fate process plays a minor role only.