井上石灰工業 Product Lineup

We would like to introduce our "Calcium Hydroxide for Food Additives (Slaked Lime)." Thanks to our limestone calcination technology, we manufacture high-purity, high-quality calcium products for food additives. They are characterized by good dispersibility in water and low heavy metal content. We offer three grades of calcium hydroxide for food additives: Hanakouhai, Kuntaro, and Shinsetsu. In particular, Hanakouhai is managed under quality standards that are even higher than those for food additives. [Features] ■ High purity ■ Good dispersibility in water ■ Low heavy metal content (such as lead and arsenic) *For more details, please download the PDF or feel free to contact us.

• Thickener
• Coagulant
• Nutritional supplements

"Simonkoraito" is an inorganic white deodorant that chemically binds and decomposes odor components that have been adsorbed using zinc ions. It powerfully deodorizes a wide variety of unpleasant odors, ranging from acidic (hydrogen sulfide, isobutyric acid) to alkaline (ammonia). Since it is a white powder that does not discolor after adsorption, it can be used in products that prioritize aesthetics, such as white non-woven fabrics and vibrant colored plastics. 【Features】 ■ Almost zero odor rebound ■ Powerful deodorization of a wide variety of unpleasant odors ■ White powder that does not compromise the aesthetics and design of products *For more details, please download the PDF or feel free to contact us.

• Deodorizing and anti-odor products
• Deodorant
• Air sterilization and deodorization equipment

This is high-quality antimony ingot produced in Vietnam. It is manufactured using stable raw material procurement from multinational sources, including domestic mines in Vietnam, Central Asia, South America, and Southeast Asia. This product meets the quality standard of "Grade 2 (Sb≧99.65%)" and is widely used as a material for lead alloys, lead-acid batteries, and as a raw material for the production of antimony trioxide. It has a rich track record of use in various countries, including Europe, Japan, South Korea, and Thailand, and has gained high trust in terms of both quality and supply. We introduce it as an optimal choice for companies looking to diversify procurement risks (multi-sourcing) or secure new global supply sources.

• Rare metals
• Non-ferrous metals

"META-Z" is an active zinc oxide that lowers the foaming temperature of EVA (ethylene-vinyl acetate copolymer). Compared to regular zinc oxide, it has smaller primary particle size and higher specific surface area, significantly improving the contact efficiency with foaming agents. Compared to zinc stearate, it provides better foaming sharpness and allows for foaming at targeted temperatures. 【Features】 ■ Promotes foaming at low temperatures ■ Good foaming sharpness ■ Excellent dispersibility ■ Reduces the foaming temperature of EVA by 20-30℃ *For more details, please download the PDF or feel free to contact us.

• Chemicals

Our company will be exhibiting at the "NEW Environmental Exhibition" held at Tokyo Big Sight from May 20 (Wednesday) to May 22 (Friday), 2026. When you visit, please be sure to stop by our booth (East Hall 7 H702). We sincerely look forward to your visit.

• others

The "MAC-SH Series" is a pre-treatment lubricant designed with micro-particle technology, processed from carefully selected quicklime and special soap. The micro-particle lime soap forms a uniform film, significantly improving drawability, enhancing the working environment by preventing scattering, and enabling cost reduction through the use of lower concentrations of lime soap solution. It has a good flowable paste consistency, which provides excellent dispersibility in water. 【Features】 ■ High-performance pre-treatment lubricant developed with micro-particle design ■ Extremely high lubricity, reducing die wear ■ Usable at lower concentrations than conventional lime soap ■ Improvement of the working environment by preventing scattering of lime soap ■ Difficult to separate solid and liquid phases in lime soap solution, forming a uniform film *For more details, please download the PDF or feel free to contact us.

• Lubricants and additives

The "MAC RF-20" is a product that maintains the adhesion properties characteristic of our products while newly incorporating rust prevention capabilities. It offers excellent handling during use and has very good dispersibility in water. It also exhibits rust prevention effects against hydrochloric acid and sulfate ions. Additionally, the foamability has been improved, allowing for use across a wide range of temperatures. 【Features】 ■ Emulsion-type limestone soap product ■ Usable at high temperatures (up to 70°C) ■ High rust prevention limestone soap ■ Forms a uniform limestone soap film *For more details, please download the PDF or feel free to contact us.

• Lubricants and additives

The "MAC NT-20" is a high-performance pre-treatment lubricant that suppresses foaming and is suitable for high-temperature use. It is particularly suitable for use in inline machines where troubles caused by foaming of limestone soap are likely to occur. This product is not a paste like conventional limestone soap; it maintains 40% active ingredients while being in an emulsion form. Because it is in emulsion form, it has very high dispersibility in water, significantly improving handling. 【Features】 ■ Low foaming, suitable for use under high-temperature conditions (up to 70°C) ■ High adhesion due to fine particle limestone soap, providing excellent lubrication and reducing die wear ■ Can be used at lower concentrations than conventional limestone soap ■ Strong adhesion allows for improvement of the working environment by preventing the scattering of limestone soap *For more details, please download the PDF or feel free to contact us.

• Lubricants and additives

The "MAC KP-20" is a limestone soap that works well with zinc phosphate coatings. It maintains the high adhesion characteristic of our products and has rust prevention properties. It is an emulsion type product that is easy to handle. The attached PDF contains the results of tests conducted on yellowing prevention and adhesion, so please take a look. 【Features】 ■ Good compatibility with zinc phosphate coatings ■ High adhesion performance ■ Emulsion type *For more details, please download the PDF or feel free to contact us.

• Lubricants and additives

The "MAC A-30" is a limestone soap product with large particles. Due to the large particle size, the limestone soap coating is likely to come off easily, which is expected to reduce the residue of lime after drawing. The attached PDF document contains the results of tests conducted on particle size and detachment properties, so please take a look. 【Specifications】 ■ White paste form ■ Active ingredient: 50% ■ Packaging: 20kg cardboard box *For more details, please download the PDF or feel free to contact us.

• Lubricants and additives

The "META-Z L Series" is a composite active zinc oxide that uses calcium carbonate as a core (base) and is densely coated with zinc oxide on its surface. Due to its small primary particle size and high specific surface area, it exhibits equal or superior rubber properties even when blended with the same amount of general zinc oxide (equivalent substitution). By replacing the high-density zinc oxide with calcium carbonate, it contributes to the overall lightweight of the product. Additionally, calcium carbonate serves as a base, suppressing "agglomeration" in the rubber and improving the processability of the rubber. 【Features】 ■ Low specific gravity and lightweight product ■ Excellent dispersibility ■ Cost reduction *For more details, please download the PDF or feel free to contact us.

• Composite Materials

"META-Z 102" is a high-purity active zinc oxide synthesized by a wet method. Compared to regular zinc oxide, it has a smaller primary particle size and a higher specific surface area, resulting in high reactivity. The reaction efficiency with acidic substances such as stearic acid and vulcanization accelerators is significantly improved. Due to its high reactivity, it can form a dense and uniform crosslinking within rubber, enhancing the tensile strength of the rubber. It also creates a dense crosslinking network, improving compression set (C-set). 【Features】 ■ Improved reaction efficiency ■ Increased crosslink density ■ Improved compression set *For more details, please download the PDF or feel free to contact us.

• Composite Materials

We would like to introduce our "Kochi Prefecture Yuzu Distillate Water, Oil, and Powder" that we handle. Using yuzu grown in Kochi Prefecture, nurtured by the warm climate and rich nature of southern Tosa, we make sure to utilize every part of the fruit after extracting the juice. The peels left after juicing retain a strong fragrance, and we extract this aroma without using any solvents, resulting in pure yuzu distillate water and oil. Nothing unnecessary is added, making it suitable for food use as well. 【Extraction Method】 ■ Microwave Extraction Method *For more details, please download the PDF or feel free to contact us.

• Beverage ingredients (powder)
• Beverage ingredients (liquid)
• Food ingredients (liquid)

"META-Z L40" is a composite active zinc oxide that uniformly combines active zinc oxide with calcium carbonate. Due to its small primary particle size and high specific surface area, the contact efficiency with foaming agents is significantly improved. It enables foaming promotion at lower temperatures, reducing the foaming temperature of PVC by 30°C. Compared to general zinc oxide, it can reduce zinc content by 60%, and due to its high activity, it exhibits equivalent performance with a smaller amount of addition, thus reducing the overall raw material costs of the formulation. [Features] ■ Promotes foaming at low temperatures ■ Excellent dispersibility ■ Cost reduction *For more details, please download the PDF or feel free to contact us.

• Composite Materials

"Calwash" is an agricultural cleaning agent (acidic) designed for cleaning agricultural machinery contaminated with Bordeaux mixture stains and similar substances. It does not have the unpleasant, sharp smell typical of acidic liquids, and it contains components that suppress corrosion, allowing for cleaning while preventing rust on metal parts. The ingredients include organic acids, hydrochloric acid, non-ionic surfactants, and other components, with available quantities of 4kg and 18kg. 【Features】 ■ Easily removes white stains with just a spray ■ No unpleasant odor ■ Metal parts are less prone to rust ■ Contains components that suppress corrosion *For more details, please download the PDF or feel free to contact us.

• Cleaning agents
• Fertilizer and pesticide cleaning equipment
• Fertilizer/Pesticide Conveyor Equipment

"IC Zinc" is a wetting agent that can be used on peaches and nectarines. Zinc ions have a bactericidal effect by penetrating the bodies of pathogens and inhibiting their enzymatic systems, while zinc oxide generates reactive oxygen species when exposed to ultraviolet light, which powerfully decomposes pathogens through a photocatalytic action. The bactericidal action is primarily due to metal ions, similar to copper agents, and the risk of developing resistant bacteria is extremely low. It is an inorganic bactericide that can be used during the growth period and has no restrictions on the number of days before harvest. 【Features】 ■ Effective against bacterial diseases ■ Inorganic bactericide that can be used during the growth period ■ No restrictions on the number of days before harvest ■ Active ingredient: Zinc oxide 97.0% ■ Appearance: White to off-white wettable powder *For more details, please download the PDF or feel free to contact us.

• Fungicides

We would like to introduce the "Chokitsu Powder" that we handle. Chokitsu is one of the fragrant citrus fruits cultivated in Sukumo, Kochi Prefecture, and has long been cherished locally as vinegar orange. It is characterized by its mild acidity and refreshing aroma. Due to its distinct scent, it allows for product differentiation from mandarin oranges and yuzu. It is cultivated in the mountains where pesticides are used as little as possible, and pesticides from other crops do not drift. 【Features】 ■ Most Chokitsu products are made using fruit juice, while Chokitsu powder is a rare product. ■ Its distinct aroma allows for product differentiation from mandarin oranges and yuzu. ■ Cultivated in the mountains with minimal pesticide use and no drift from other crops. ■ Utilizes parts that would normally be discarded during juicing. *For more details, please download the PDF or feel free to contact us.

• Food ingredients (powder)

We would like to introduce our "Domestic Wine Juice Powder" that we handle. It is made from a variety rich in polyphenols, which can be cultivated even in the rainy Kochi Prefecture, Japan. The raw materials used are red grapes for wine and grapes. By kneading it into cookie dough, you can add dietary fiber, and you can also feel a nut-like flavor. 【Features】 ■ Powdered pomace (press cake) from Kochi Prefecture wine ■ Contains over 60% dietary fiber ■ Manufactured from varieties rich in polyphenols ■ Raw materials used: red grapes for wine, grapes *For more details, please download the PDF or feel free to contact us.

• Food ingredients (powder)
• Food/beverage functional materials
• Supplement materials

"Shimonko Light" is a white powder for deodorants that has a unique layered structure. It physically captures bad odors in the "interlayers" where crystals overlap and traps them inside. The ions in the interlayers and surface layer can bind with odor components both physically and chemically, making it possible to suppress the re-release of bad odors. It exhibits a high deodorizing effect against hydrogen sulfide, ammonia, and others, significantly reducing the "re-release" of absorbed odors compared to activated carbon. [Features] ■ Physically captures and traps bad odors inside due to its unique layered structure ■ Adsorbs odor components from both physical and chemical perspectives ■ Capable of controlling particle shapes such as hexagonal prisms and nanoparticles ■ Exhibits a high deodorizing effect against hydrogen sulfide, ammonia, and others ■ Significantly suppresses the "re-release" of absorbed odors compared to activated carbon *For more details, please download the PDF or feel free to contact us.

• Deodorizing and anti-odor products

"QC2-S" is a highly hygroscopic calcium oxide with small particles and rapid reaction properties. Compared to our conventional products, it has a D50 of 3.2μm, making it a fine particle that supports a wide range of applications, including water absorption and heat generation functions. We also handle calcium oxide that meets food additive standards and pharmaceutical use. The content is 20kg, and the packaging consists of an inner bag made of aluminum and an outer box made of cardboard. 【Features】 ■ Small particles with rapid reaction ■ D50: 3.2μm, Dmax: less than 23.5μm ■ Supports water absorption and heat generation functions *For more details, please download the PDF or feel free to contact us.

• Other additives
• Lubricants and additives

"Slalric" is a high-concentration calcium hydroxide for slurry that is surprisingly smooth despite its high concentration. It features excellent dispersion when dissolved in water and has high dispersibility that makes it resistant to settling over time. It maintains low viscosity even at a high concentration of 50% w/w. Since the main component is slaked lime, there is no need to handle hazardous materials or toxic substances. It is provided in powder form, allowing for concentration adjustments tailored to the equipment and applications at the usage site. 【Features】 ■ High dispersibility: Resistant to settling over time ■ Low viscosity: Maintains low viscosity even at a high concentration of 50% w/w ■ Flexible concentration adjustment: Provided in powder form, allowing for concentration adjustments based on equipment and applications ■ Safe and easy management: No need to handle hazardous materials or toxic substances *For more details, please download the PDF or feel free to contact us.

• Water Treatment Chemicals
• Ceramics
• pH adjuster

We would like to introduce "fine particle calcium hydroxide" that we handle. It is a calcium hydroxide, which has antibacterial effects due to its alkalinity and gas adsorption effects for hydrogen sulfide, hydrochloric acid, and other gases. As a result of evaluating a product with 10% added to LDPE sheets, we confirmed an antibacterial effect with a reduction rate of over 99.9% against E. coli. It is also available as a masterbatch. 【Features】 ■ Antibacterial effect due to alkalinity (slightly soluble in water: pH 12.4) ■ Substance used as a food additive ■ Gas adsorption effects for hydrogen sulfide, hydrochloric acid, and others *For more details, please download the PDF or feel free to contact us.

• Other additives
• Food film/sheet
• Disinfecting and antibacterial products

We would like to introduce "Calcium Oxide and Calcium Hydroxide for Food Additives" that we handle. Thanks to our limestone calcination technology, we produce high-purity, high-quality calcium products for food additives. They are characterized by good dispersibility in water and low heavy metal content. We offer three grades of calcium hydroxide for food additives: Hanakouhai, Kuntaro, and Shinsetsu. In particular, Hanakouhai is a product managed under quality standards that are even higher than those for food additives. [Features] - High purity - Good dispersibility in water - Low heavy metal content *For more details, please download the PDF or feel free to contact us.

• Coagulant
• Nutritional supplements
• Other additives

Our company exhibited at the "44th Health Expo," one of Japan's largest BtoB exhibitions for the health industry, held at Tokyo Big Sight from February 25 (Wednesday) to 27 (Friday), 2026. At our booth (6E-11), we showcased a variety of upcycled materials derived from underutilized resources nurtured by nature, as well as high-quality organic ingredients, under the theme of "Proposals from Kochi Prefecture." With keywords like "upcycle," "sustainable," and "organic," we presented materials that have grown alongside the natural environment of Kochi. 【Event Overview】 ■ Dates: February 25 (Wednesday) to 27 (Friday), 2026, 10:00 AM to 5:00 PM ■ Venue: Tokyo Big Sight (Halls 4, 5, and 6) ■ Our Booth Number: 6E-11 *For more details, please refer to the related links or feel free to contact us.

• others

"VESTA" is a rubber dewatering agent that improves dispersion in rubber through various surface treatments and masterbatching, while also contributing to the prevention of scattering during roll operations. We offer five different grades in our lineup. Please feel free to contact us if you have any inquiries. 【Features】 ■ Suitable activity level for rubber ■ Coarse particle cut ■ Good dispersion ■ Product grades tailored to needs ■ Low impurities (heavy metals, SiO2, etc.)

• Chemicals

"IC Bordeaux" is a paste-type Bordeaux mixture that retains the advantages of traditional Bordeaux liquid while compensating for its shortcomings. It can be used for organic agricultural products under the new JAS law, with no restrictions on the number of days before harvest or the number of applications, making it a safe choice as an environmentally friendly pesticide. 【Features】 ■ Effective against a wide range of diseases in many crops ■ Cost-effective ■ No resistant bacteria develop ■ Long-lasting fungicidal effect (residual efficacy) ■ Simply dilute with water *For more details, please contact us.

• Chemicals and anti-mold materials
• Biofertilizer for Agriculture
• Fertilizer and pesticide cleaning equipment