29H,31H-phthalocyanine

Repeated dose toxicity: oral

Administrative data

Endpoint:

sub-chronic toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1979

Report date:

1979

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 408 (Repeated Dose 90-Day Oral Toxicity Study in Rodents)

Deviations:

yes

Remarks:

; no clinical chemistry, hematology, or urinalysis were conducted and no organ weights were taken (as recommended in OECD Guideline 408). Extra investigations on copper contents in liver and kidneys were included.

GLP compliance:

no

Limit test:

no

Test material

Test material information

Constituent 1

Reference substance name:

29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32 copper

EC Number:

205-685-1

EC Name:

29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32 copper

Cas Number:

147-14-8

Molecular formula:

C32H16CuN8

IUPAC Name:

[29H,31H-phthalocyaninato(2-)-kappa~2~N~29~,N~31~]copper

Test material form:

solid: particulate/powder

Specific details on test material used for the study:

- Analytical purity: The chemical analysis, performed at Midwest Research Institute indicated that the purity was 104.7 % +- 1.1 % (elemental analysis)

Test animals

Species:

mouse

Strain:

B6C3F1

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Harlan Industries
- Age at study initiation: 8.5 weeks
- Weight at study initiation: males: 16 - 23 g; females: 16 - 19 g
- Housing: polycarbonate cages: groups of 5 mice per cage
- Diet: weighed portions of Purina Lab Chow in meal form, mixed together with weighed portions of the test material (see details at "doses/concentrations")
- Water: ad libitum
- Acclimation period: 15 days

ENVIRONMENTAL CONDITIONS
- Temperature: 21 - 23 °C
- Humidity: 40 - 60 %
- Air changes: at least 15 per hour
- Photoperiod: 12 hrs dark / 12 hrs light

Administration / exposure

Route of administration:

oral: feed

Vehicle:

other: 12 % water was added to the test material as a dust control agent

Details on oral exposure:

Dose levels of 5.0, 2.5, 1.25, 0.6 and 0.3 % (w/w) were selected for both males and females. The selected doses were prepared by mixing weighed portions of purina Lab Chow in meal form with weighed portions of the test material. 12 % water was added to the test material as a dust control agent prior to mixing with the meal. For each dose level, one weekly lot of 4500 g (+ 12 % water compensation) was prepared.

The actual mixtures were composed of the following ingredients:
- Dose level 5.0 % (w/w): 252 g test material and water + 4275 g meal
- Dose level 2.5 % (w/w): 126 g test material and water + 4387.5 g meal
- Dose level 1.25 % (w/w): 63 g test material and water + 4443.75 g meal
- Dose level 0.6 % (w/w): 30.24 g test material and water + 44735 g meal
- Dose level 0.3 % (w/w): 15.12 g test material and water + 4486.5 g meal

Each diet was mixed in a Patterson-Kelly twin shelled V blender for 15 min.
The doses were mixed one or two days prior to the week of their use in the study, and stored at 23 °C.

Analytical verification of doses or concentrations:

yes

Details on analytical verification of doses or concentrations:

One analysis was perfomed to determine the accuracy of the mixture concentration. Results were within +/- 10 % of the desired dose concentration.

Duration of treatment / exposure:

91 days

Frequency of treatment:

daily

Doses / concentrations

Doses / concentrations 1

Dose / conc.:

0.3 other: % in the diet

Doses / concentrations 2

Dose / conc.:

0.6 other: % in the diet

Doses / concentrations 3

Dose / conc.:

1.25 other: % in the diet

Doses / concentrations 4

Dose / conc.:

2.5 other: % in the diet

Doses / concentrations 5

Dose / conc.:

5 other: % in the diet

No. of animals per sex per dose:

10 males and 10 females per dose

Control animals:

yes, plain diet

Details on study design:

- 10 animals were used per sex and dose group.
- Five dose levels of 0.0, 0.3, 0.6, 1.25, 2.5 and 5.0 % in feed were used in this study (approx. 0, 1000, 2000, 4000, 8000 and 16000 mg/kg bw for males [based on 7.3 g/d average food consumption, 0.023 kg average bw] and approx. 0, 1100, 2200, 4700, 9400 and 18700 mg/kg bw for females [based on 7.1 g/d average food consumption, 0.019 kg average bw], respectively).
- The selected doses were prepared by mixing together weighed portions of Purina Lab Chow in meal form with weighed portions of the chemical. 12% water was added to the chemical as a dust control agent prior to mixing with the meal.
- Each dosed group received on 91 consecutive days of dosed feed mixture.

Examinations

Observations and examinations performed and frequency:

Animals were observed twice each day for clinical signs, with at least 6 hours between observations. All clinical signs (or negative observations) were recorded daily. Additionally, blood sampling was conducted from 10 control mice, 6 treated males and 4 treated females.

Sacrifice and pathology:

- Mice were necropsied on day 92 and 93.
- Gross examination were performed on all animals from all dosage groups.
- Microscopic examinations were performed on following organs from all animals in the control group and the highest dose treatment group: Kidneys, liver, lung, (only in control group: heart).

Other examinations:

Copper analyses were completed in the liver and kidney tissues and the formalin preserving those tissues from male mice in the highest dose group (5 % w/w) and control groups. See details and results in endpoint "7.1.1. Basic toxicokinetics" in endpoint study record "Batelle 76-34-106002, mouse".

Results and discussion

Results of examinations

Clinical signs:

no effects observed

Mortality:

mortality observed, non-treatment-related

Description (incidence):

There were seven early deaths during this study. Four male mice from four different dose or control groups died during weeks 3, 7, and 10, while 3 control female mice died during the week 3.

Body weight and weight changes:

effects observed, non-treatment-related

Description (incidence and severity):

The body weight data ranged from -7 to +11 % differential weight gain in the dosed females, without any dose-relation. Dosed male mouse groups showed a positive weight differential in all groups except the lowest dosage group of 0.3 %. No trends coinciding with dosage levels or food consumption are evident in these data.

Food consumption and compound intake (if feeding study):

effects observed, non-treatment-related

Description (incidence and severity):

There were no trends in diet consumption among dosed animals compared with controls in either male or female mice. Female control mice consumed 2 to 3 grams more feed than dosed animals. However, diet consumption data in this group were based on seven survivors during the last ten weeks of the study and have a higher value than expected. The dosed female mouse groups had average and expected levels of diet consumption.

Food efficiency:

not examined

Water consumption and compound intake (if drinking water study):

not examined

Ophthalmological findings:

not examined

Haematological findings:

not examined

Clinical biochemistry findings:

not examined

Urinalysis findings:

not examined

Behaviour (functional findings):

not examined

Immunological findings:

not examined

Organ weight findings including organ / body weight ratios:

not examined

Gross pathological findings:

no effects observed

Neuropathological findings:

not examined

Histopathological findings: non-neoplastic:

no effects observed

Histopathological findings: neoplastic:

no effects observed

Other effects:

no effects observed

Effect levels

1

Key result

Dose descriptor:

NOAEL

Effect level:

>= 16 000 mg/kg bw/day (nominal)

Based on:

test mat.

Sex:

male

Basis for effect level:

other: no adverse findings

Remarks on result:

not determinable due to absence of adverse toxic effects

2

Key result

Dose descriptor:

NOAEL

Effect level:

>= 18 700 mg/kg bw/day (nominal)

Based on:

test mat.

Sex:

female

Basis for effect level:

other: no adverse findings

Remarks on result:

not determinable due to absence of adverse toxic effects

Target system / organ toxicity

Key result

Critical effects observed:

no