Uronium hydrogen sulphate

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:

toxicity to aquatic algae and cyanobacteria

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Data source

Reference

Reference Type:

publication

Title:

Effect of ammonia concentrations on growh of Chlorella vulgaris and nitrogen removal from media.

Author:

Tam NFY and Wong YS

Year:

1996

Bibliographic source:

Bioresource Technology 57: 45-50.

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

other: 18 day batch test

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Ammonium sulphate

EC Number:

231-984-1

EC Name:

Ammonium sulphate

Cas Number:

7783-20-2

Molecular formula:

(NH4)2SO4

IUPAC Name:

diammonium sulfate

Test organisms

Test organisms (species):

Chlorella vulgaris

Study design

Test type:

static

Water media type:

freshwater

Limit test:

no

Total exposure duration:

18 d

Test conditions

Test temperature:

20 ºC

pH:

7+/- 0.2

Nominal and measured concentrations:

0, 10, 20, 40, 50, 60, 80, 125, 250, 500, 750, and 1000 mg N/L

Results and discussion

Effect concentrations

Duration:

18 d

Dose descriptor:

EC50

Effect conc.:

2 700 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

cell number

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Conclusions:

Ammonium sulphate is not classified as toxic for aquatic algae