1,3,5-triazine-2,4,6(1H,3H,5H)-trione, trisodium salt

Genetic toxicity: in vitro

Administrative data

Endpoint:

genetic toxicity in vitro

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: The analogue CAS nº 36549-48-1 monosodium salt of cyanuric acid, monohydrate, shares the same functional group with the substance CAS nº 3047-33-4 trisodium cyanurate and the results can be extrapolated to trisodium cyanurate.

Cross-reference

Reason / purpose for cross-reference:

reference to other study

Data source

Reference

Reference Type:

other: read-across

Title:

Unnamed

Year:

2010

Materials and methods

Principles of method if other than guideline:

Read-across approach from a study report (using the methods outlined by the proposed guidelines for registering pèsticides in the U.S.) on the analogue CAS nº 36549-48-1 monosodium salt of cyanuric acid, monohydrate.

GLP compliance:

no

Type of assay:

other: read –across form a bacterial reverse mutation assay on analogue

Test material

Test material information

Constituent 1

Reference substance name:

Monosodium cyanurate monohydrate

IUPAC Name:

Monosodium cyanurate monohydrate

Constituent 2

Reference substance name:

36549-48-1

Cas Number:

36549-48-1

IUPAC Name:

36549-48-1

Details on test material:

- Name of test material (as cited in study report): monosodium salt of cyanuric acid, monohydrate
- Molecular formula (if other than submission substance): C3H3N3O3.H2O.Na
- Molecular weight (if other than submission substance): 170.08
- Smiles notation (if other than submission substance): Na].O.O=C1NC(=O)NC(=O)N1
- InChl (if other than submission substance):
InChI=1/C3H3N3O3.Na.H2O/c7-1-4-2(8)6-3(9)5-1;;/h(H3,4,5,6,7,8,9);;1H2
- Structural formula attached as image file (if other than submission substance): see Fig.

Method

Details on test system and experimental conditions:

METHOD OF APPLICATION: In agar (plate incorporation)

Results and discussion

Test results

Species / strain:

S. typhimurium, other: TA100 Spot test: S. typhimurium: TA1535, TA1537, TA97, TA98 and TA100

Metabolic activation:

with and without

Genotoxicity:

negative

Cytotoxicity / choice of top concentrations:

no cytotoxicity

Any other information on results incl. tables

Based on the experimental results obtained with the analogue monosodium salt of cyanuric acid, monohydrate (S. typhimurium: TA100 Spot test: S. typhimurium: TA1535, TA1537, TA97, TA98 and TA100, with and without metabolic activation, genotoxicity negative, no citotoxicity) , the read-across approach is applied and the same results can be extrapolated for substance trisodium cyanurate, under test conditions.

As indicated in the European Chemical Agency Practical Guide 6 “How to report read –across and categories”, the structural grouping was realized using “OECD QSAR APPLICATION TOOL BOX” version 1.1.0.(see attachment).

 

Table 1: Data Matrix, Analogue Approach

CAS Number		36549-48-1	3047-33-4
CHEMICAL NAME		Analogue 3 Sodium cyanurate monohydrate	Trisodium cyanurate
PHYSICO-CHEMICAL DATA
Melting Point		No data	Estimated data: 260.74ºC
Boiling Point		No data	Estimated data: 603.07ºC
Density		No data	Experimental results: 2.09g/mL
Vapour Pressure		No data	Estimated data: 1.62E-013 mm Hg at 25ºC
Partition Coefficient (log Kow)		No data	Estimated data: -2.06
Water solubility		No data	Estimated data: 1E+006 mg/L at 25 ºC
ENVIRONMENTAL FATE and PATHWAY
Aerobic Biodegradation		No data	Read-across from Cyanuric acid: Normally it degrades very slowly under aerobic conditions.  Nevertheless, it can be readily degraded aerobically under nitrogen-limited conditions, but only by a number of microorganisms in certain conditions.
Anaerobic Biodegradation		No data	Read-across from Cyanuric acid: Ready biodegradability
ENVIRONMENTAL TOXICITY
Acute Toxicity to Fish		No data	Read-across from Cyanuric acid: 96 h-LC50 > 1510 mg/L
Acute Toxicity to Aquatic Invertebrates		No data	Read-across from Cyanuric acid: 48 h-LC50 > 1510 mg/L
Toxicity to Aquatic Plants		Experimental data:   72h-EbC50= 2700 mg/L, basis for effect: biomass 96h-EbC50 > 5000 mg/L, basis for effect: biomass 72h- ErC50 > 5000 mg/L, basis for effect: growth rate 96h- ErC50 > 5000 mg/L, basis for effect: growth rate 72h- NOEC = 1250 mg/L, basis for effect: growth rate 96h- NOEC = 5000 mg/L, basis for effect: growth rate	Read-across from Cyanuric acid: 96 h-EC50=1075 mg/L (basis for effect: in vivo chlorophyll) 96 h-EC50=989.6 mg/L (basis for effect: cell number)   Read-across from Sodium cyanurate: 72h-EC50 > 128.2 mg/L Read-across from Sodium cyanurate monohydrate:   72h-EbC50= 3095.7 mg/L, basis for effect: biomass 96h-EbC50 > 5708.4 mg/L, basis for effect: biomass 72h- ErC50 > 5708.4 mg/L, basis for effect: growth rate 96h- ErC50 > 5708.4 mg/L, basis for effect: growth rate 72h- NOEC = 1433.1 mg/L, basis for effect: growth rate 96h- NOEC = 5708.4 mg/L, basis for effect: growth rate
MAMMALIAN TOXICITY
Acute Oral		No data	Read-across from Cyanuric acid: LD50 > 7554.42 mg/kg bw
Acute Inhalation		No data	Read-across from Cyanuric acid: LC50 > 7.93 mg/L
Acute Dermal		No data	Read-across from Cyanuric acid: LD50 > 7554.42 mg/kg bw
Repeated Dose		Repeated dose toxicity: oral: Key study: mouse, 13 weeks: NOAEL = 5375 ppm  LOAEL < 5375 ppm Key study: rat, 104 weeks: NOAELca. 154 mg/kg bw/day, male NOAEL ca. 266 mg/kg bw/day, female LOAEL ca. 371 mg/kg bw/day, male LOAEL ca. 634 mg/kg bw/day, female	Read-across from Cyanuric acid:   NOAEL ca 349 mg/kg bw/day male NOAEL ca. 1380.9 mg/kg bw/day female Read-across from Sodium cyanurate:   LOAEL > 5128.8 ppm NOAEL = 5128.8 ppm Read-across from Sodium cyanurate:   NOAELca. 1952.8 mg/kg bw/day,male NOAELca. 2028.4 mg/kg bw/day, female Read-across from Sodium cyanurate monohydrate:   NOAEL = 6162.5 ppm  LOAEL < 6162.5 ppm Read-across from Sodium cyanurate monohydrate:   NOAELca. 176.5 mg/kg bw/day, male NOAEL ca. 304.9 mg/kg bw/day, female LOAEL ca. 425.3 mg/kg bw/day, male LOAEL ca. 726.8 mg/kg bw/day, female
Genetic Toxicity in vitro	-         Gene mutation in bacteria	Key study:  Salmonella, with and without metabolic activation, genotoxicity negative, no citotoxicity	Read-across from Sodium cyanurate: Negative   Read-across from Sodium cyanurate monohydrate: Negative
	-         Mammalian gene mutation	No data	Read-across from Sodium cyanurate: Negative
	Chromosomal aberration	No data	Read-across from Sodium cyanurate: Negative
Genetic Toxicity in vivo		No data	Read-across from Sodium cyanurate: Negative
Carcinogenicity		Key study: Rat, 104 weeks NOAEL ca. 154 mg/kg bw/day, male NOAEL ca. 266 mg/kg bw/day, female	Read-across from Sodium cyanurate: NOAEL ca. 1520  mg/kg bw/day, male NOAEL ca. 1580 mg/kg bw/day, female Read-across from Sodium cyanurate monohydrate: NOAEL ca. 176.5 mg/kg bw/day, male NOAEL ca. 304.9 mg/kg bw/day, female
Reproductive Toxicity		No data	Read-across from Sodium cyanurate:   NOAEL:   P male ca.  602.6 mg/kg bw/day P female  ca. 1218 mg/kg bw/day F1 male  ca. 641.1 mg/kg bw/day F1 female  ca. 1166.8 mg/kg bw/day F2 male  ca. 243.6 mg/kg bw/day F2 female  ca. 1243.7 mg/kg bw/day

Applicant's summary and conclusion

Conclusions:

Interpretation of results (migrated information):
negative

Trisodium cyanurate was negative.

Executive summary:

Based on the experimental results obtained with the analogue monosodium salt of cyanuric acid, monohydrate (S. typhimurium: TA100 Spot test: S. typhimurium: TA1535, TA1537, TA97, TA98 and TA100, with and without metabolic activation, genotoxicity negative, no citotoxicity) the read-across approach is applied and the same results can be extrapolated for substance trisodium cyanurate, under test conditions.