2-diethylaminoethanol

Toxicity to terrestrial plants

Administrative data

Endpoint:

toxicity to terrestrial plants: short-term

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study well documented, meets genereally accepted scientific principles

Data source

Reference

Reference 1

Reference Type:

publication

Title:

Chlorosis in healthy and viroid-infected plants exposed to the steam additive diethanolamine

Author:

Horst RK et al.

Year:

1983

Bibliographic source:

Scientia Horticulturae 19: 1-8

Reference 2

Reference Type:

secondary source

Title:

2-Diethylaminoethanol, CAS No.: 100-37-8. UNEP Publications, SIDS Initial Assessment Report for SIAM 15

Author:

OECD SIDS

Year:

2002

Bibliographic source:

SIDS Initial Assessment Report for SIAM 15

Report date:

2002

Materials and methods

Principles of method if other than guideline:

Toxic effects of test substance on terrestrial plants cultivated in the greenhouse

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

2-diethylaminoethanol

EC Number:

202-845-2

EC Name:

2-diethylaminoethanol

Cas Number:

100-37-8

Molecular formula:

C6H15NO

IUPAC Name:

2-(diethylamino)ethanol

Details on test material:

TS-Freetext:
2-diethylaminoethanol, purity: > 99 %

Test organisms

Species:

other: other terrestrial plant: Chrysanthemum morifolium CV "Indianapolis white"

Results and discussion

Effect concentrations

Duration:

22 d

Dose descriptor:

EC50

Effect conc.:

0.12 other: mg/l

Basis for effect:

other: chlorosis

Any other information on results incl. tables

RS-Freetext:
- test substance caused chlorosis in young leaves of chrysanthemum,  tomato, corn and bean
- Sensitivity of corn and chrysanthemum to DEAE was
cultivar-dependend: chrysanthemum cultivar "Indianapolis
White" was sensitive to low concentrations of DEAE, while
"Bonnie Jean", "Velvet Ridge" and "Mistletoe" were less so,
and corn "3XD50" was sensitive to DEAE while "Ohio 28" was
not.
- The presence of latent chrysanthemum chlorotic mottle viroid (ChCMV-L)  increased the sensitivity of "Bonnie Jean" and "Velvet Ridge" to DEAE.
- Infection of tomatoes with mild or severe strains of potato spindle  tuber viroid (PSTV) resulted in increased
sinsitivity to DEAE under conditions of environmental
stress.
- Leaves of chrysanthemum exhibition DEAE-induced chlorosis
contained higher, but non-toxic, levels of iron and other
minerals than those from non DEAE-treated plants.

- Chrysanthemum cultivars varied in their sensitivity to DEAE.
- Symptoms were generally restricted to leaves which developed after  initiation of DEAE exposure, and included chlorosis, epinasty, stunting  and necrosis. 
- All "Indianapolis White" (4/4) exhibited chlorosis 7 days
after exposure to 1E-2 ml DEAE added to non-sterile soil
(725 ml pot).
- At 1E-4 ml/pot, only 50 % (2/4) of the plants were chlorotic after 22  days.