Prevention of Cement Dermatitis in Construction Workers With Iron Sulphate

Abstract

Allergic dermatitis to chromate in cement is the most common occupational dermatitis among construction workers in Singapore. Hexavalent chromate in cement can be removed by iron sulphate. This study determined the minimum concentration of iron sulphate required to remove the hexavalent chromate from nine brands of Asian cement. The hexavalent chromate concentrations in cements were determined by colorimetric spectrophotometry. The minimum amount of iron sulphate required to remove completely hexavalent chromate in all the cements was 0.35% w/w. Iron sulphate should be used in the construction industry to prevent cement dermatitis in construction workers.

Keywords

Cement allergy Construction worker Iron sulphate Hexavalent chromate Occupational dermatitis

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References

1. Goh CL , Soh SD : Occupational dermatoses in Singapore. Contact Dermatitis 1984; 11: 288–93.

2. Jaeger H , Pelloni E : Tests epicutanés aux bichromates positifs dans ľeczema au ciment. Dermatologica 1950; 100: 207–16.

3. Johnston AJM , Calnan CD : Cement dermatitis I. Chemical aspects. Trans St John's Hosp Derm Soc 1958; 41: 11–16.

4. Fregert S , Gruvberger B : Chemical properties of cement. Berufsdermatosen 1972; 20: 238–48.

5. Goh CL , Kwok SF : Chromate allergy: chromate content of Asian cements. J Dermatol (Tokyo) 1986: 13 (in press).

6. Fregert S , Gruvberger B , Sandahl E : Reduction of chromate in cement by iron sulphate. Contact Dermatitis 1979; 5: 39–42.

7. Cronin E : Contact Dermatitis. Edinburgh: Churchill Livingstone, 1980, p. 297.

8. Goh CL : Sickness absence due to occupational dermatoses in a prefabrication construction factory. Contact Dermatitis 1986; 15: 28–31.

9. Lim TY, Tam CT: Effect offerrous sulphate on some properties of concrete. Technical Report, Science Council of Singapore RDAS Project No. C/81/01. January 1985.