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VOC and Solvents

Some are advertising VOC free.

This is a totally incorrect statement. First it must be free of all solvents and second you cannot measure it.

In ordcr to comply with a low VOC contents it is only in regards to the solvents mentioned in the “National Pollutant Inventory”. If a solvent is not listed or exempted it can be added to the product without counting as a VOC contents.

Further tints or pigments are exempted and not counting in this equation. Solvents in these products can pollute a low VOC paint  to that extend, that it is not a low VOC product anymore.
You must know that not all solvents are regarded as a VOC.

Exempted are: Acetone, Ammonia, PCBTF, Methyl Acetate, Methyline Chloride,
                        And volatile methyl siloxanes only to mention a few.

Low VOC coatings may contain Hazardous Air Pollutants(HAPs) and many Exempt VOCs are HAPs although non exempt products such as propylene glycol are not HAPs.

According to the NPI solvents with a vapour pressure lower than 0.27 kPA at 25”C or Boiling Point under 110C+ are not regarded as VOC.

These regulations show no concern for the toxicity of compounds.
Exempt products such as acetone and ammonia are very toxic but do not contribute to smog and are consequently used in low/zero VOC formulations of major manufacturers, safe from regulation and with no concern for users.  Many of solvents borne coatings suggest compliance but in reality contain exempt VOCs and HAPs.
Currently many green coatings comply with environmental legislation but pay lip-service to the environment and consumers.

We are looking here only at solvents. In many paint systems are other ingredients which can be harmful to the environment and consumers.

BIO’s Wall Paint and BIO’s Enamel Lacquer water based are extreme low VOC products with less than 1 gr. VOC per Litre (0.1%).