Sulphur dioxide

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Entry adopted from the OECD SIAR on sulfur dioxide without modification.Information from subacute inhalation study, study well documented, meets generally accepted scientific principles, no further details reported on type of irritative changes; study acceptable for assessment.

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Data source

Reference

Reference Type:

publication

Title:

Effects of exhaust pollutant sulfur dioxide on lipid metabolism on guinea pig organs.

Author:

Haider, S.S.

Year:

1985

Bibliographic source:

Indust. Health 23: 81-87

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

Study only reports on isolated mechanistic investigations.

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Sulphur dioxide

EC Number:

231-195-2

EC Name:

Sulphur dioxide

Cas Number:

7446-09-5

Molecular formula:

SO2

IUPAC Name:

Sulphur dioxide generated from sulphur by combustion

Details on test material:

- Name of test material (as cited in study report): sulfur dioxide
No further details are given.

Test animals

Species:

guinea pig

Strain:

not specified

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Weight at study initiation: 250-500 g
- Diet: a pellet diet (Hindustan Lever Ltd., India)
- Water: ad libitum

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 29-31°C
- Humidity (%): 60%
- Photoperiod: 12 hours dark/light cycle

No further details are given.

Test system

Type of coverage:

open

Preparation of test site:

not specified

Vehicle:

other: air

Controls:

yes

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): Test concentration: 10 ppm
- Concentration (if solution):


VEHICLE
- Amount(s) applied (volume or weight with unit):
- Concentration (if solution):
- Lot/batch no. (if required):
- Purity:

Duration of treatment / exposure:

Exposure time: 30 days, 7 d/w, 1 h/d

Observation period:

no data

Number of animals:

24 male guinea pigs: 12 adults and 12 controls

Details on study design:

Control animals were kept under normal environmental conditions in the exposure chamber, whereas experimental animals were exposed to the contaminated atmosphere of SO2 (10 ppm) in the exposure chamber. Animals were exposed in a specifically designed exposure chamber for testing atmospheric pollutants by inhalation. The contaminated atmosphere of SO2 in the chamber was obtained by mixing continuously ambient air at the rate of 917 l/min and SO2 9.4 ml/min at a constant rate.
The guinea pigs were killed by decapitation and organs were immediately removed for analysis.

Results and discussion

In vivo

Results

Irritation parameter:

other: observations from a 30-day repeated dose toxicity study

Remarks on result:

other: Signs of skin irritation are induced by daily 1-hour whole-body exposure of guinea pigs in inhalation chambers to exposure atmospheres containing 10 ppm sulfur dioxide in air.

Irritant / corrosive response data:

Nasopharyngitis, preening, increased immobility, skin and eye irritation were the symptoms observed following SO2 toxicosis.

Any other information on results incl. tables

Signs of skin irritation are induced by daily 1-hour whole-body exposure of guinea pigs in inhalation chambers to exposure atmospheres containing 10 ppm sulfur dioxide in air.

Applicant's summary and conclusion

Conclusions:

Signs of skin irritation are induced by daily 1-hour whole-body exposure of guinea pigs in inhalation chambers to exposure atmospheres containing 10 ppm sulfur dioxide in air.