Zeolite, synthetic, crystalline, non fibrous, silica and titanium based

Short-term toxicity to fish

Administrative data

Endpoint:

short-term toxicity to fish

Type of information:

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

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Test procedure is in accordance with national standard methods with acceptable restrictions.

Data source

Reference

Reference Type:

publication

Title:

Aquatic environmental safety assessment for a nonphosphate detergent builder.

Author:

Maki AW and Macek KJ

Year:

1978

Bibliographic source:

Environ. Sci. Technol. 12, 573-580

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: Methods for Acute Toxicity Tests with Fish, Macroinvertebrates, and Amphibians. EPA 660/3-75/009 (1975)

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Zeolite, cuboidal, crystalline, synthetic, non-fibrous

IUPAC Name:

Zeolite, cuboidal, crystalline, synthetic, non-fibrous

Details on test material:

- Name of test material (as cited in study report): Type A Zeolite
- Related CAS number: 1318-02-1
- Surface modified with Ca2+, Mg2+ and K+ ions. Analysis by atomic adsorption indicated that 90% existed in the Ca2+-modified form with a total of 10% as Mg2+, Na+ and K+ salts.

Sampling and analysis

Analytical monitoring:

yes

Test solutions

Vehicle:

no

Details on test solutions:

Continuous gentle stirring was achieved by a motor-driven stirrer providing a water current through perforated tubing holes to keep the test substance in suspension.

Test organisms

Test organisms (species):

Pimephales promelas

Details on test organisms:

TEST ORGANISM
- Common name: fathead minnows
- Source: acquired from a hatchery in Arkansas
- Age at study initiation (mean and range, SD):
- Length at study initiation (mean): 53 mm
- Weight at study initiation (mean): 1.3 g

ACCLIMATION
- Acclimated to laboratory test conditions for a minimum of 30 days prior to testingcclimation period:

Study design

Test type:

static

Water media type:

freshwater

Limit test:

no

Total exposure duration:

96 h

Test conditions

Hardness:

35 mg/l CaCO3

Test temperature:

21 +- 1°C

pH:

7.1

Dissolved oxygen:

oxygen content above 6 mg/l.

Nominal and measured concentrations:

Concentrations up to 680 mg/L were tested (not further specified).

Details on test conditions:

TEST SYSTEM
- Test vessel: 19.6 L glass container, kept in water baths
- No. of organisms per vessel: 10, fish per concentration were added to each test container within 30 min. after the compound was added
- No. of vessels per concentration (replicates): no data
- No. of vessels per control (replicates): 10
- No. of vessels per vehicle control (replicates): no data
- No feeding during the test and 48 h prior to testing.

TEST MEDIUM / WATER PARAMETERS
- Dilution water was reconstituted deionized water, a control with dilution water only was maintained.

OTHER TEST CONDITIONS
- Not aerated

EFFECT PARAMETERS MEASURED (with observation intervals if applicable) :
- Mortality

Results and discussion

Effect concentrations

Duration:

96 h

Dose descriptor:

NOEC

Effect conc.:

> 680 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

mortality (fish)

Any other information on results incl. tables

Sublethal observations / clinical signs:

Test organisms exhibited no mortality up to 680 mg/L.