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Environmental Report

Environmental Performance

Minimizing the Environmental Impact of Our Business Activities

The Hitachi Chemical Group ensures all Group businesses and employees work together to continuously reduce the many environmental impacts stemming from its business activities.

We have compiled environmental impact data for our main production sites, unless otherwise noted (43 sites at 24 companies) in fiscal 2017 ( Data for previous fiscal years were compiled for main production sites in the relevant years. To clarify the progress toward attaining the target, the data was recalculated based on the main production sites for fiscal year, 2017.

The indicators marked with csr_checkreceive the independent assurance.

Energy Consumption

The Hitachi Chemical Group works to reduce energy consumption associated with its manufacturing activities as a means of addressing global warming and fossil fuel depletion. In fiscal 2017, the Group's consolidated sites consumed in total energy equivalent to 383 thousand kL of crude oil, while our major production sites consumed energy equivalent to 270 thousand kLcsr_check. At all consolidated sites, energy consumption increased by 21% year-on-year: 16% was attributable to companies newly included in consolidation in the previous year through M&A while the remaining 5% was caused by changes in production volume. Energy consumption per production unit at our major production sites improved significantly by 12% from the previous year. This improvement is explained by the continued energy conservation efforts particularly at production sites outside Japan and by changes in the product line.

We will continue to reduce our energy consumption at overseas production sites by strengthening energy-saving initiatives with support from Japan. In addition, the Hitachi Chemical Group has been installing solar power generation units to generate renewable energy at each site. Energy generated in this way reached 265 MWh in fiscal 2017.

Energy Consumption (Major Production Sites)

Energy Consumption


Greenhouse Gas Emissions

To prevent further global warming, the Hitachi Chemical Group works on reducing greenhouse gas (GHG) emissions by monitoring emissions from energy sources and other sources. In fiscal 2017, a total of 848 thousand tons-CO2e of GHG were emitted from the Group’s consolidated sites and 590 thousand tons-CO2ecsr_check (Scope 1: 119 thousand tons-CO2ecsr_check, Scope 2: 471 thousand tons-CO2ecsr_check) were emitted from our major production sites. GHG emissions per production unit at our major production sites have been improved by approximately 13% from the previous year. As with energy consumption, this improvement is explained by the results of continuous energy-saving activities and change in product line. We will continue to push ahead with energy-saving activities mainly at our overseas sites and aim to curb emissions of GHG from non-energy sources to help prevent further global warming.

Please refer to the link regarding the calculation of Scope 3.

GHG Emissions

GHG Emissions


GHG emissions are calculated based on emissions coefficients stipulated in the Japanese Act on the Promotion of Global Warming Countermeasures. GHG emissions associated with the use of electric power at overseas production sites are calculated based on emissions coefficients of each country in 2005 published by the International Energy Agency in 2010.

Water Resources Input

The Hitachi Chemical Group works to reduce the water consumption particularly in regions with high water risks. In fiscal 2017, the amount of water consumption was 11,631 thousand m³ at the Group's consolidated sites, and 9,761 thousandcsr_check at our major production sites. Water consumption per production unit at our major production sites improved by 12% year-on-year. The Hitachi Chemical Group has also been making effort to grasp water stress since fiscal 2013. In fiscal 2017, we expanded the scope to include all production sites in and outside Japan to understand the relationship with water resources input. Consequently, we found that the number of sites and water resources input are regrettably increasing in areas where water stress is high. We will further enhance cooperation with each area and promote more specific initiatives for reducing water resources input.

Water Consumption at Major Production Sites

Water Consumption at Major Production Sites


* The figures of water input of FY2015 have been revised due to the data review.

Water Stress and Water Resources Input at each Production Region
Water Stress Fiscal 2016 Fiscal 2017
Production sites Water resources input
(thousand m3)
Production sites Water resources input
(thousand m3)
YoY difference
Extremely high risk 11 966 13 1,134 117%
High risk 10 475 13 952 201%
Medium to high risk 29 5,432 35 5,696 105%
Low to medium risk 11 1,047 13 988 94%
Low risk/No data 8 2,750 8 2,786 101%

*Water stress is derived from Baseline water stress in WRI Aqueduct

Wastewater and Pollutant Load

As a company that deals with many different chemicals, Hitachi Chemical Group is also committed to the management of wastewater quality. After proper treatment, wastewater generated by our manufacturing processes is discharged into rivers and other public waters as well as sewage systems. Wastewater quality is managed according to our own standards, which are more stringent than those set by laws and regulations. In fiscal 2017, 9,060 thousand m³ of wastewater was discharged from our main production sites. The associated COD (chemical oxygen demand) was 44 tons and the BOD (biochemical oxygen demand) was 57 tons. We will keep water quality under proper management.

Wastewater Discharged at Major Production Sites

Wastewater Discharged at Main Production Sites

Air Pollution and its Impacts on Living Environments

The Hitachi Chemical Group is also focused on the prevention of air pollution and works on reducing its impact on living environments. With regard to air pollution, we work to reduce emissions of compounds and NOx (nitrogen oxides) and SOx (sulfur oxides) emissions from boilers and gas-combustion exhaust equipment and volatile organic compound(VOC) which is the cause of Photochemical oxidants and suspended particulate matter. In fiscal 2017, our major production sites emitted 793 tonscsr_check of VOCs, 124 tons of NOx, and 23 tons of SOx. VOC emissions increased year-on-year due to changes in production. We maintained the emission rate at a level equivalent or better than the previous year with proper maintenance and management of VOC handling and treatment facilities at each site.

Other impacts—including noise, vibration, and odors—are properly managed through regular measurements at each site.

VOC Emissions at Major Production Sites

VOC Emissions at Main Production Sites


* In fiscal 2016, the number of chemicals compiled as VOCs was expanded from 41 to 77.

NOx•SOx Emissions at Major Production Sites

NOx•SOx Emissions at Main Production Sites

Release and Transfer of Chemicals

Our production sites in Japan properly manage the amount of chemicals subject to the law Concerning Pollutant Release and Transfer Register (PRTR Law) that are released into the air or public waters, and the amount of such chemicals that are transferred as wastes outside of the sites or into the sewage systems.

Chemical Risk

Hitachi Chemical works diligently to correctly manage chemicals contained in its products to ensure customers can use them safely. In addition to the introduction of GHS labels on chemical containers indicating their composition, content, hazardous material information and the proper issuance of SDSs, we are working to improve the environmental conformity of our products through disuse, replacement and reduction of hazardous chemicals.


The Hitachi Chemical Group works to advance closed-loop sourcing and recycling in its manufacturing processes, taking steps designed to reduce waste-associated environmental impacts and effectively use our planet’s limited resources. Initiatives range from curbing waste generation through loss reduction based on Material Flow Cost Accounting (MFCA) to increasing the recycling ratio of waste, reducing the amount of landfill disposal, and proper disposal. In fiscal 2017, the Group discharged 118 thousand tons of waste in total on a consolidated basis. Of this amount, 72 thousand tons of waste were discharged at our major production sites. While waste amount per production unit at our major production sites improved by 5%, our recycling rate was 73% and final landfill rate was 5%, both of which stayed unchanged from fiscal year 2016. Going forward, we will identify the issues to be addressed at each site and continue to make further improvements in the future.

Waste Generated at Major Production Sites

Wasted Generated at Main Production Sites

To improve appropriate management of waste disposal at domestic production sites, we encourage the sharing of information within the Group regarding industrial waste disposal contractors with which we work, and the use of electronic industrial waste manifests. In fiscal 2016, we are almost complete with our transfer process to the electronization of waste manifests, and have begun operating most of the waste disposal through electronic manifest, with exclusions for certain sections.

Preventing Soil Contamination and Hazardous Substance Leaks

In the past, the Hitachi Chemical chlorinated organic solvents to rinse its products and intermediate good, which contamination of the soil and groundwater at some of its sites; it has not, however, spread beyond these premises. The contamination of these sites has been reported to relevant authorities and the soil has been decontaminated by circulated aeration. Contamination levels are now below regulatory thresholds, but we are continuing with the decontamination work and regularly measure concentration levels. Having learned from these experiences, we are also strengthening the management of hazardous substances throughout the Group.

Preserving Biodiversity

Hitachi Chemical became one of the first Japanese core member companies of the Ecosystem Focus Area of the World Business Council for Sustainable Development (WBCSD) in 2007. Since then we have been proactive in our efforts to preserve biodiversity. Preserving biodiversity is one of the three pillars of the Hitachi Group’s environmental vision. Accordingly, the Group has incorporated advanced initiatives that take advantage of the unique characteristics of individual localities in the Hitachi Chemical Action Guidelines for Environmental Conservation.

In fiscal 2017, Hitachi Chemical has taken part in mangrove planting activities carried out in Malaysia and Thailand from previous fiscal year. Furthermore, at Hitachi Chemical’s Nabari Works, we continue clean-up activities in the areas surrounding the habitat of the Gifu butterfly, a species designated as a category II (VU) endangered species by the Japanese Ministry of the Environment. We will carry on with the activities so that we can continue seeing the vibrant butterflies flying everywhere around the site. We will also raise awareness of ecosystem preservation, and promote various ecosystem preservation activities that utilize the unique characteristics of individual businesses and localities.

Please refer to the link for more information on our social contribution activities.

Mangrove planting by Hitachi Chemical (Johor) at Tanjung Piai National Park

Gifu butterfly living in the area of Nabari Works. (A shot in 2016)

Reducing Offices’ Environmental Impact

The Hitachi Chemical Group has been working to reduce the environmental impact of not only its production sites but headquarters, branch offices and research sites as well. When we relocated Hitachi Chemical's headquarters to its current location in Marunouchi, Tokyo, in January 2013, we simultaneously consolidated the head offices and branches of Group companies to improve efficiency in energy consumption. Offices and research sites have also made an effort to reduce their environmental impact through Group-wide initiatives including replacing business trips with video/telephone conferences, preparing meeting materials in electronic form instead of paper, temperature control of air-conditioning systems, and turning off the office lights during the lunch hour. In fiscal 2017, we reduced our CO2 emissions by 0.6 tons in Japan through these efforts.

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