Stone Chemical Company

What Stone Chemical Company does

Stone Chemical Company is a privately held US specialty chemicals manufacturer founded in 1996 and headquartered in Naperville, Illinois. The company develops and produces a full line of metal finishing chemistry, including aluminum anodizing products (cleaners, etches, deoxidizers, additives, seals, rack strippers), copper/brass/bronze cleaners and anti-tarnish chemistry, stainless steel passivation products, plating pretreatment chemicals, fume suppressants, defoamers, and waste treatment polymers. Its proprietary "No Dump Process Design" formulations prevent sludge formation and extend bath life, and its patented CU400L and CU450L lead removal products (covered by US Patents 7,771,542 and 8,618,038) meet EPA-mandated NSF61 requirements for potable water system components, removing leachable lead down to approximately 1 ppb from brass, bronze, and copper parts.

The company sells exclusively through direct B2B channels — phone, email, website inquiry — to metal finishing shops and industrial manufacturers across the United States, with applications spanning aerospace, military, medical, automotive, architectural, and plumbing component end-markets. Stone Chemical is ISO 9001:2015 certified, operates a technical service laboratory that returns titrations within 24 hours of sample receipt, and maintains 140,000 square feet of warehousing capacity in Naperville to support immediate shipment. The business operates with no disclosed institutional investment, no subsidiaries, and no public M&A or partnership activity.

Name

Stone Chemical Company

Legal name

Stone Chemical Company

Website

https://stonechemical.com

Company type

Private

Founded year

1996

Operating status

Operating

Ownership category

akta.pro rank

Product category

Specialty Chemicals for Metal Finishing

SIC

Chemicals & Allied Products (2800), Miscellaneous Chemical Products (2890)

akta.pro primary industry

Mining & Metals Process & Water Chemicals (IMAEAJAJ)

akta.pro secondary industries

Rust Removers, Metal Cleaners & Tarnish Removers (CRAJAKAG), Stainless Steel & Metal Surface Cleaners & Polishes (CRAJACAF)

Keywords

• Specialty chemical manufacturing
• Aluminum anodizing chemistry
• Metal finishing chemicals
• Lead removal chemistry
• Passivation chemistry

Headquarters

HQ city

Naperville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Specialty Chemical Products: Stone Chemical Company generates revenue through the sale of specialty chemical products for metal finishing applications. Products include anodizing chemistry, cleaning compounds, lead removal formulations, passivation chemistry, and related specialty chemicals. Sales are direct to metal finishing shops and industrial manufacturers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Stone Chemical Company manufactures and sells a comprehensive line of specialty chemicals for metal finishing operations, including aluminum anodizing chemistry (cleaners, etches, deoxidizers/desmutters, anodizing additives, seals, and rack strippers), copper/brass/bronze chemistry (cleaners, anti-tarnish treatments, and patented lead removal formulations), stainless steel cleaning and passivation products, plating pretreatment chemicals, fume suppressants, defoamers, and waste treatment polymers. The company sells directly to metal finishing shops and industrial manufacturers across the United States, with its proprietary formulations including patented lead removal technology that helps customers meet EPA-mandated NSF61 requirements for drinking water system components.

Product overview

Stone Chemical Company is a specialty chemicals manufacturer offering a comprehensive portfolio of metal finishing products. The company provides aluminum anodizing chemistry (including cleaners, etches, deoxidizers, additives, seals, and rack strippers), copper/brass/bronze chemistry (cleaners, lead removal products, and anti-tarnish chemistry), stainless steel products, plating pretreatment chemicals, fume suppressants, defoamers, and waste treatment polymers. Their product lines follow a proprietary 'No Dump Process' Design which prevents sludge formation during use. Key products include the AN-series anodizing chemicals (AN100, AN350L, AN535L, AN900L), CU-series copper/brass/bronze products (CU400L, CU450L for lead removal), and stainless steel cleaners (ST100L, ST110L). The company also offers immersion and spray wash cleaners for various metals.

Differentiator

Problem solved

Functional benefit

Products and services

• AN100 Alkaline Aluminum Cleaner Cost-effective, non-etching, non-silicated, non-caustic, powdered alkaline cleaner that removes stubborn oils, greases and other soils common in the aluminum manufacturing and plating industries while protecting the underlying metal. Used in metal finishing and plating pretreatment operations.
• AN105LF Alkaline Aluminum Cleaner Low foaming version of AN100 alkaline cleaner, primarily used for spray and parts wash applications. Designed to remove difficult soils in short cycle times in aluminum anodizing and plating pretreatment operations.
• AN150L Non-Corrosive Liquid Cleaner (Neutral) Neutral, low-foaming, non-hazardous, biodegradable cleaner that removes oils, greases, buffing compounds and other soils common to the metals industry. Contains no acid or alkaline material and will not harm underlying metal. Used extensively for immersion, spray and tumbling operations in anodizing and plating pretreatment.
• SW100L Neutral Spray Cleaner Neutral, dispersing, spray wash cleaner for removing oil and grease after machining and fabrication. Will not etch aluminum and prevents further oxidation. For use in industrial parts washers across aluminum, copper, brass, and bronze applications.
• SW150L Alkaline Spray Cleaner Non-dispersing, spray wash alkaline cleaner for removing oil and grease after machining and fabrication. Hydrocarbon soils are rejected and float to surface for easy removal via overflow or skimming. For use in industrial parts washers.
• AN110L Alkaline Aluminum Cleaner (Liquid) Liquid version of AN100 alkaline cleaner. Does a remarkable job of cleaning tough soils in metal finishing, anodizing, and plating pretreatment operations.
• AN160L Acidic Aluminum Cleaner Non-etching, mild acid metal cleaner that quickly cleans tenacious oils, greases and other soils while not etching aluminum. Often used to replace alkaline cleaners due to superior cleaning capability, thorough rinsing and non-etching characteristics in plating pretreatment and metal finishing.
• AN200 Alkaline Aluminum Etch Proprietary powdered aluminum etch that provides a consistent, even, matte finish. Prevents the sludge and scale buildup normally associated with caustic etching in aluminum anodizing operations.
• AN210L Liquid Alkaline Aluminum Etch Proprietary liquid aluminum etch designed for ease of use. Easily added to bath by tank-side additions or metering, eliminates dusting associated with powdered etch. Provides smooth, even, matte finish while eliminating sludge and scale buildup in the bath.
• AN250L Etch Extender Aluminum etch additive formulated to prevent sludge and scale while significantly extending etch bath life. Provides better bath control and allows operation at higher levels of dissolved aluminum (up to 180 g/L versus 25 g/L without additive), reducing waste treatment costs.
• AN115 Alkaline Cleaner (Mild Etching) Primarily used for spray wash applications for aluminum where a mild etch is desired. Alkaline aluminum spray cleaner designed to remove tenacious oils, grease and other soils from metal surfaces during fabrication and finishing process.
• AN775 Aluminum Rack Stripper Zincated, caustic-based rack stripper designed to significantly extend aluminum rack life. Etches the anodic coat off the rack or part down to the aluminum then stops. Operates at room temperature without heating.
• AN650L Deoxidizer-Desmutter Acidic non-chromated, low ferrous based deoxidizer/desmutter designed to rapidly remove tenacious contamination and smut on wrought and cast aluminum in anodizing operations.
• AN675L Deoxidizer-Desmutter Acidic non-chromated, non-ferrous deoxidizer/desmutter which works quickly and efficiently to remove heavy dark smut associated with aluminum castings. Also effective for de-oxidizing and desmutting typical wrought aluminum alloys.
• AN350L Anodizing Additive Highly concentrated anodizing additive formulated to prevent burning of parts during anodizing operation. Allows operation at higher temperatures and current densities, accelerates anodic coating development, reduces anodizing time, and increases production output. Used for both conventional (Type II) and hardcoat (Type III) anodizing.
• AN360L Anodizing Additive Highly concentrated anodizing additive formulated to prevent burning of parts during anodizing operation using high levels of sulfuric acid (up to 300 grams/liter). Used for both Type II and Type III anodizing.
• AN400L Electrolytic Coloring Additive Cost effective additive for eliminating uneven color distribution on electrolytically colored parts. Added to the electrolytic color bath to compensate for uneven current density.
• AN900L Fume Suppressant (Anodizing Baths) Excellent, cost effective fume suppressant used for both Type II and Type III (hardcoat) acidic anodizing baths. Designed for very small quantities and is low foaming.
• AN295L Fume Suppressant (Anodizing Additive Line) Highly concentrated, cost effective fume suppressant used for alkaline environments such as etch bath fuming. Also sometimes used in the anodizing bath. Designed for very small quantities and is low foaming.
• AN535L Mid-Temp Aluminum Anodizing Seal (Low-Nickel) Low nickel, low foaming, long lived, mid-temperature seal with excellent acid resistance and smut and bleed suppressant properties. Typically exceeds 2,000 hours of salt spray while maintaining excellent light-fastness and light stability. Used in aerospace, military, medical, automotive and architectural applications.
• AN545L Mid-Temp Aluminum Anodizing Seal Fast-acting nickel acetate based aluminum anodizing seal providing maximum corrosion resistance. Smut and dye bleed additives improve bath longevity and ensure optimum aesthetic appearance. Salt spray exceeds 2,000 hours. Used in commercial, aerospace and architectural applications.
• AN550L Mid-Temp Aluminum Anodizing Seal Formulated with additive package designed to withstand degrading effects of heavy contamination in the seal bath (sulfates). Provides beautiful appearance and improved corrosion resistance versus other seals.
• AN555L Mid-Temp Anodizing Seal (Ultra-Low Nickel) Ultra-low nickel, mid-temp anodizing seal with excellent corrosion resistance and smut and bleed suppressant properties. Used for all dyed and clear anodizing applications. Long-lived and environmentally friendly. Minimizes nickel in waste stream.
• AN590L Seal Additive Used primarily as additive for AN535L and AN545L seals to extend seal bath operation beyond normal life. Suppresses smut formation and helps prevent dye bleed. Also used as smut suppressant in hot water seals.
• AN593L Seal Additive Enhanced seal additive package designed as replenisher for AN550L and AN555L seals. Cost effective way to extend seal bath life while preventing formation of smut and dye bleed.
• AN595L Seal Additive Works in very small quantities (10-20 mills per 100 gallons) to prevent formation of smut associated with certain sealing conditions. Works equally well in hot DI water sealing baths.
• CU100L Copper, Brass & Bronze Cleaner & Brightener Non-nitric based material designed to both clean and brighten copper, brass, bronze and other non-ferrous metals. Eliminates nitric fumes typically associated with brightening process. Safe to use and easily waste treatable. Commonly used as pre-treatment for plating.
• CU200L Copper, Brass & Bronze Tarnish Preventative Prevents corrosion and formation of tarnish on copper, brass, bronze, silver, nickel and other non-ferrous metals. Used to prevent tarnish on parts after machining and prior to plating, during plating process, or after plating/cleaning for storage or shipping. Neutral, non-hazardous material.
• CU400L Copper, Brass & Bronze Lead Removal Cleaner (Patented) Cleans, brightens and removes leachable surface lead from copper, brass and bronze parts down to near 1 ppb while providing a passivated surface which resists tarnishing. The mildly acidic formula alters lead oxidation state while minimizing loss of Copper and Zinc from Brass, and Copper and Tin from Bronze. Meets EPA mandated NSF61 requirements for drinking water systems. Patented product (US 7,771,542 and 8,618,038).
• CU450L Copper, Brass & Bronze Concentrated Lead Remover (Patented) Most concentrated and aggressive lead removal product for difficult-to-remove surface lead typical on rough surface brass (castings and forgings). Cleans, brightens and helps prevent tarnishing while removing leachable lead from brass, bronze and copper. Allows manufacturers to meet NSF61 requirements. Patented product.
• ST100L Stainless Steel Passivating Cleaner Alkaline liquid cleaner that removes typical processing oils and greases, brightens stainless steel parts, and passivates the surface of the metal. Much milder than nitric acid passivation.
• ST110L Stainless Steel Passivating Cleaner/Brightener Aggressive powdered caustic stainless steel cleaner used in immersion cleaning tanks. Does an excellent job as a stainless steel cleaner and brightener while passivating in one step. Replaces aggressive nitric acid processes and complies with ASTM A-380 for stainless steel passivation.
• AN130L Steel Cleaner Liquid alkaline cleaner with rust preventative. Designed to prevent formation of flash rust on all steels. Especially effective in cleaning and preventing rust on tooling steel. Contains no solvents.
• AN290L Fume Suppressant Excellent, cost effective fume suppressant used for alkaline environments such as etches bath fuming. Designed to be used in very small quantities and is low foaming.
• AN565L Defoamer Highly concentrated, cost effective defoamer used for alkaline environments such as etch bath and anodizing bath foaming. Designed to be used in very small quantities.
• AN880N Waste Treatment Polymer Very high molecular weight dry powder flocculating anionic polymer designed for water clarification at 0.5 wt % concentration in waste treatment filtration equipment at metal finishing facilities.

Quantifiable outcome

• Seal products exceed 2,000 hours salt spray test performance
• +2 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Heatbath Corporation: US-based manufacturer of metal finishing chemistry including cleaners, etches, and anodizing products. Comparable product mix focused on aluminum and non-ferrous metal processing.
• Chemetall (BASF Coatings): Global supplier of surface treatment chemicals for aluminum, zinc, and non-ferrous metal finishing with overlapping anodizing, cleaning, and passivation product lines. Direct competitor to Stone Chemical's metal finishing chemistry portfolio.
• Atotech (MKS Instruments): Leading global supplier of specialty chemistry for plating and surface finishing, serving electronics, automotive, and industrial finishing customers. Overlaps directly with Stone Chemical's plating pretreatment and anodizing chemistry lines.
• MacDermid Enthone (Element Solutions): Specialty chemicals for electronics, industrial, and decorative surface finishing including plating, anodizing seal chemistries, and passivation. Closely comparable product portfolio across non-ferrous metal processing.
• SurTec International: Specialty chemical supplier focused on surface treatment technologies for aluminum, zinc, and non-ferrous metal finishing with a comparable product portfolio of cleaners, etches, and passivation chemistry.
• Uyemura International: Manufacturer of specialty plating and surface finishing chemistry serving electronics, decorative, and industrial metal finishing customers with overlapping copper/brass and passivation product lines.
• Technic Inc. Specialty chemistry manufacturer for plating, surface finishing, and electronic materials with comparable non-ferrous metal processing products including cleaners and anti-tarnish chemistry.

Broad incumbents

• Henkel: Global diversified chemicals company with a surface treatment business that supplies metal pretreatment, cleaning, and coating chemistry to industrial manufacturers. Competes broadly across multiple Stone Chemical product categories.
• PPG Industries: Global diversified coatings and specialty materials company with metal pretreatment and industrial finishing product lines that overlap with Stone Chemical's plating pretreatment chemistry.
• DuPont Specialty Products: Large diversified chemicals company with specialty industrial chemistry offerings that overlap with metal finishing, plating pretreatment, and surface treatment categories served by Stone Chemical.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stone Chemical Company