Response to 4 VOC voluntary labelling system

What is VOC = volatile organic compound?
Substances including formaldehyde, toluene, and xylene, which are in plywood, adhesive, paint, insect repellent, etc., are considered to cause sick house syndrome. WHO (World Health Organization) classifies chemical substances into three classes according to the boiling point range. Strictly speaking, relatively highly-volatile substances in VVOC (super volatile organic compound) like formaldehyde with a low boiling point followed by VOC, are considered to be problematic, and a countermeasures for reduction are being promoted.

Response to 4 VOC voluntary emission control

After the use of formaldehyde and chlorpyrifos was regulated by the amendment to the Building Standards Law in July 2003, the "Building Material Testing Center" was established "Study Group on Standardization of VOC Emission Rate from Building Materials" consisting of experts and scholars, and industry associates , in order to enact the testing method and standard values for VOCs including toluene, xylene, ethylbenzene and styrene (hereinafter referred to as "4 VOC") according to "the standard value of VOC emission rate from building materials."
This is not based on legal regulations, but is a voluntary guideline formulated by the study group. In response to this, each industry group including the Japan Construction Materials and Housing Equipment Industry Association (hereinafter referred to as J-CHIF) has created a VOC voluntary labeling system for wooden building materials etc. and began operation.
Based on “the voluntary labelling on VOC emissions of decorative boards,” we are proceeding with obtaining certification of "4 VOC standard compliance" (registered trademark of Komori cooperation) for each product. Regarding certified products, we will display "4 VOC compliance conformity" on catalogs and homepages, etc. according to "Housing parts VOC display guidelines", so that we can choose products with less influence of indoor air pollution by VOC.

Below 1/3 of levels of 4 VOC emission rate

The emission rate of 4VOCs from LiveNaturalPremium is less than one third of the guidelines set by the Ministry of Health, Labor and Welfare.
(*) Test results show the lowest values of (1.2μg/㎡h) of determinable value
Types of VOC Suggested indoor concs
by MHLW (μg/㎥)
Standard values
by J-CHIF (μg/㎡h)
3-day post test results of
Live Natural Premium
toluene 260 38 Below 1.2μg/㎡ (*)
xylene 870 120 Below 1.2μg/㎡ (*)
ethylbenzene 3800 550 Below 1.2μg/㎡ (*)
styrene 220 32 Below 1.2μg/㎡ (*)
Standard values of emission rate established by "the Study Group on Standardization of Emission Rate from Building Materials" are aiming to set the indoor temperature of the target VOC under usual assumed usage conditions to be equal to or lower than the indoor concentration guideline value indicated by the Ministry of Health, Labor and Welfare It does not satisfy the environment such as high temperature exceeding 28 ℃.