Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Toxicological information

Exposure related observations in humans: other data

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Administrative data

Endpoint:
exposure-related observations in humans: other data
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: A scientific publication.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1987

Materials and methods

Type of study / information:
Consumer exposure and occupational exposure
Endpoint addressed:
skin sensitisation
Principles of method if other than guideline:
No data.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzothiazole-2-thiol
EC Number:
205-736-8
EC Name:
Benzothiazole-2-thiol
Cas Number:
149-30-4
Molecular formula:
C7H5NS2
IUPAC Name:
1,3-benzothiazole-2-thiol

Method

Details on exposure:
Common sources of exposure to MBT include rubber gloves, shoes and boots, rubberized fabrics such as brassieres and girdles, rubber money counters, elasticized stockings, and underwear elastic.

Results and discussion

Results:
The percentage of positive patch test reactions to MBT and closely related chemicals ranged from 2.1 to 4.4% in dermatitis patients from 1972 to 1981. Higher reaction rates were noted in men. Shoes and gloves are frequent sources of MBT exposure.
Reactions may be elicited by 0.01 % MBT

Applicant's summary and conclusion

Conclusions:
The percentage of positive patch test reactions to MBT and closely related chemicals ranged from 2.1 to 4.4% in dermatitis patients from 1972 to 1981. Higher reaction rates were noted in men. Shoes and gloves are frequent sources of MBT exposure.
Reactions may be elicited by 0.01 % MBT
Executive summary:

This review discusses clinical reports and patch testing data demonstrating that mercaptobenzothiazole is sensitizer.

Common sources of exposure to MBT include rubber gloves, shoes and boots, rubberized fabrics such as brassieres and girdles, rubber money counters, elasticized stockings, and underwear elastic.

Consumer exposure to rubber products has resulted in shoe and glove dermatitis, and reactions to scuba diving masks, wet suits, swim caps and goggles, and many cosmetic products.

Occupational exposure to 2-mercaptobenzothiazole may result in hand dermatitis in hospital nurses and other medical personnel.