Substitution of carbon black in capping and coving profiles for resilient flooring finishes
A company has removed carbon black from their flexible flooring profiles made of PVC by using the alternative pigment Manganese Ferrite Black Spinel.
Carbon black is listed on the Substance Database according to SUBSPORT Screening Criteria (SDSC) as a carcinogen. The alternative substance is not listed on the SDSC and has no official classification.
The flexible PVC flooring profiles are used to finish resilient flooring installations in hospitals, schools, food factories and other sensitive locations. Builders, installation specialists, specifiers and maintenance companies are increasingly concerned to see improvements in any known health or environmental hazard associated with construction products, particularly where they are to be used in sensitive environments. Gemini Adhesives Ltd. has previously replaced phthalate plasticisers in its PVC profiles with TOTM (trioctyl trimellitate) and has used it in a way which overcomes installation and adhesion problems exhibited by phthalate alternatives to DEHP such as DINP (see: http://www.subsport.eu/case-stories/379-en?lang=). The substitution of carbon black was seen as a desirable further improvement due to safety concerns regarding its 2B carcinogen rating. The selection of the Manganese Ferrite Black Spinel was primarily influenced by its excellent compatibility with the phthalate free vinyl compound and the superior scuff resistance achieved by this combination over traditional phthalate softened PVC using carbon black and fillers. This means that the product in situ will retain its appearance and physical integrity despite being subjected to numerous regular mechanical cleaning procedures. The substitute pigment is not considered to have carcinogenic potential or to be toxic to the environment and is approved for use in food packaging and other similar uses.
Although the substitute pigment was considerably more expensive than carbon black the low concentration required resulted in an additional cost of only £.012 per linear metre so did not influence price sensitivity issues.
This case story was provided by a producer. It is describing an alternative pigment for PVC capping and coving profiles. The carcinogenic pigment carbon black can be substituted by using the alternative manganese ferrite black spinel.
The alternative is used as black pigment in PVC. PVC is intrinsically hazardous and although the polymer is not listed in the hazardous substances database according to SUBSPORT screening criteria (SDSC), the monomer – vinyl chloride – is listed in SDSC as carcinogen and does not comply with SUBSPORT criteria. PVC is a polymer associated with many negative aspects, both concerning human health and the environment and should therefore be phased out. PVC is still widely used. The alternative is useful information for applications where it may not be possible to substitute PVC, yet. SUBSPORT provides several case stories for PVC alternatives.
MSDS of manganese ferrite black spinelFurther languages available
Type of information supplier
Producer / distributor
Gemini Adhesives Ltd
Tel.: +44 (0)1530 224712
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