Anaelle Guez
Co-founder & CEO, Compliance
Global Chemical & Product Compliance: CAS Numbers, Formulations, and Multi-Country Regulatory Intelligence
When you sell a chemical product in South Africa, Mexico, or the EU, compliance goes far beyond the chemical itself. Packaging, labeling, formulations, environmental claims — every country has its own rules, and they change constantly. This guide maps the global regulatory landscape for chemical products, explains how CAS number intelligence works, and shows how AI can turn a formulation into a worldwide compliance map in minutes.
Beyond chemicals: the full product compliance picture
Chemical product compliance is often reduced to substance restrictions — which ingredients are banned or limited. But when a product crosses borders, regulators look at the entire product: the chemical formulation, the packaging materials, the label language and format, the safety data sheet, the environmental claims, and the transport classification. Miss any of these layers and your product gets held at customs or pulled from shelves.
Chemical substances — restricted, banned, or concentration-limited ingredients per jurisdiction (REACH Annex XVII, TSCA, K-REACH, KKDIK)
Packaging regulations — material restrictions, recyclability mandates, EPR schemes, AGEC (France), Packaging Act (Germany), Mexico NOM-050
Labeling & SDS — GHS implementation varies per country, pictogram requirements, language mandates, safety data sheet formats (ISO 11014)
Environmental & sustainability claims — green claims directive (EU), FTC Green Guides (US), carbon labeling, biodegradability standards
Transport & hazmat classification — UN model regulations, ADR (Europe), DOT 49 CFR (US), IMDG Code, country-specific exemptions
The global regulatory fragmentation challenge
Every country operates its own chemical regulatory framework. A substance that is freely sold in the United States may be restricted in the EU, banned in South Korea, and under review in Brazil — simultaneously. For companies selling across borders, this creates an enormous compliance mapping challenge that multiplies with every new market.
European Union
REACH (registration, evaluation, authorization of chemicals), CLP Regulation (classification, labeling, packaging), Biocidal Products Regulation, RoHS Directive, POPs Regulation, PFAS universal restriction proposal.
Mexico
NOM standards (NOM-005, NOM-018 for hazardous chemicals), SEMARNAT environmental regulations, COFEPRIS health authorization, Federal Environmental Liability Law, new chemical inventory requirements.
South Africa
NRCS compulsory specifications, Hazardous Chemical Substances Regulations, SANS standards, National Environmental Management Act, new Chemical Substances in Products regulations under development.
Brazil
ANVISA regulations, IBAMA environmental permits, INMETRO certification, new Toxic Substances Law (PL 6120/2019), GHS implementation via ABNT NBR 14725, chemical inventory (CONASQ).
China
MEE chemical regulations, IECSC inventory (Inventory of Existing Chemical Substances), new chemical substance notification (MEE Order 12), GB standards for labeling, China REACH (Measures for Environmental Management).
India, Japan, Korea, Turkey
India BIS standards and Hazardous Chemicals Rules, Japan CSCL (Chemical Substances Control Law), Korea K-REACH and K-BPR, Turkey KKDIK (Turkish REACH) — each with unique inventory, notification, and labeling requirements.
Tracking regulatory changes in real time
Chemical regulations are not static. Countries constantly update their restricted substance lists, modify concentration limits, reclassify hazard categories, and introduce entirely new frameworks. In 2025-2026 alone: the EU proposed a universal PFAS restriction affecting over 10,000 substances, Mexico updated NOM-018 for hazardous chemical labeling, South Africa advanced its Chemical Substances in Products regulations, Turkey completed its KKDIK registration deadlines, and India tightened BIS certification requirements for imported chemicals.
Real-world example: Titanium dioxide reclassification
In 2022, the EU reclassified titanium dioxide (TiO2, CAS 13463-67-7) as a Category 2 carcinogen by inhalation under CLP. This single change affected thousands of products across paints, coatings, cosmetics, food, and pharmaceuticals. Companies that detected the change early reformulated or updated their SDS and labeling within months. Those that missed it faced product holds, customer complaints, and regulatory fines — especially when exporting to EU markets from countries where TiO2 remains unrestricted.
The problem is that most companies learn about these changes too late. Regulatory updates are published across hundreds of national gazettes, agency websites, and technical committees in 30+ languages. No compliance team can manually monitor all of them. By the time a change reaches an industry newsletter, weeks or months may have passed — and your products may already be non-compliant.
Anticipating what’s next: multi-country regulatory forecasting
Compliance is not just about knowing what the rules are today. It is about anticipating what they will be in 6, 12, or 24 months. When the EU proposes a restriction, it typically takes 2-4 years to become binding — but once adopted, the compliance deadline is tight. Companies that track proposals early can reformulate, adjust supply chains, and update documentation proactively instead of scrambling at the last minute.
EU PFAS universal restriction — proposed 2023, expected adoption 2025-2026, affecting 10,000+ per- and polyfluoroalkyl substances across all industries
Mexico chemical inventory reform — SEMARNAT developing a national chemical inventory aligned with GHS Rev. 10, expected implementation 2026-2027
South Africa chemical products regulation — DTIC advancing mandatory chemical substance notification requirements for all imported and manufactured products
India Chemical Safety and Security Code — consolidating multiple fragmented chemical regulations into a unified national framework
EU Ecodesign for Sustainable Products (ESPR) — Digital Product Passport requirements expanding to chemical products by 2027
CAS number intelligence: from a single substance to worldwide status
Every chemical substance has a CAS (Chemical Abstracts Service) number — a unique identifier recognized worldwide. But knowing a CAS number is only the starting point. The critical question is: what is the regulatory status of this substance in every country where I sell my product? A single CAS number can have dozens of different regulatory statuses across jurisdictions: freely allowed in one, concentration-limited in another, banned in a third, and under review in a fourth.
Example: Formaldehyde (CAS 50-00-0) — regulatory status across markets
EU — Classified CMR 1B under CLP, restricted in cosmetics (max 0.1% free formaldehyde), REACH Annex XVII restrictions for consumer products
US — OSHA PEL at 0.75 ppm (TWA), EPA TSCA risk evaluation ongoing, California Prop 65 listed, varies by state
China — Listed in IECSC, GB standards for indoor air quality (GB/T 18883), stricter limits for children’s products
Japan — CSCL Class I Specified, restricted in household products, MHLW workplace limits
Brazil — ANVISA limits in cosmetics, IBAMA environmental restrictions, workplace OEL per NR-15
Traditionally, checking the worldwide status of a single CAS number requires consulting dozens of databases: ECHA (EU), EPA CompTox (US), NITE-CHRIP (Japan), IECSC (China), and national inventories for each target market. This process takes hours per substance. For a product with 15-30 ingredients, the workload becomes unmanageable without automation.
From formulation to compliance: mapping your entire product
The real challenge is not checking one substance — it is checking an entire formulation against the regulatory requirements of every target market. A typical chemical product contains 10 to 50 ingredients, each with its own CAS number, concentration, and function. When you multiply that by 20 or 40 target countries, you face thousands of regulatory checkpoints.
Substance screening — check every CAS number against restricted/banned substance lists in each target jurisdiction
Concentration limits — verify that each ingredient stays within the permitted concentration for every market (limits often differ by country)
Classification & labeling — determine the correct hazard classification per country’s GHS implementation and generate compliant labels
Packaging compliance — ensure packaging materials, formats, and markings meet country-specific requirements
Documentation — generate Safety Data Sheets (SDS) in the correct format and language for each market
Scale of the problem
A cleaning product with 25 chemical ingredients sold in 30 countries requires 750 individual substance-by-country checks — just for restricted substance compliance. Add packaging, labeling, SDS, and transport requirements, and the total number of regulatory checkpoints exceeds 3,000. Doing this manually takes months and costs hundreds of thousands in consultant fees.
How Cleo automates global chemical product compliance
Cleo replaces the patchwork of databases, consultants, and manual spreadsheet checks with a single AI-powered platform that handles the entire chemical product compliance workflow. Enter your formulation (list of CAS numbers and concentrations) and target markets — Cleo returns a structured compliance map across all jurisdictions in minutes.
CAS-level global screening — enter any CAS number and instantly see its regulatory status across 60+ jurisdictions: allowed, restricted, banned, under review, or pending restriction
Full formulation compliance — upload your entire product formulation and get a compliance matrix: every substance checked against every target market, with concentration limit flags
Continuous regulatory monitoring — Cleo scans 3,500+ regulatory sources daily and alerts you when a rule change affects any substance in your product portfolio
Regulatory forecasting — track proposals, consultations, and draft regulations before they become binding, with estimated timelines and impact scores
| Capability | Manual / traditional tools | With Cleo |
|---|---|---|
| CAS number check across 60+ countries | Hours per substance, multiple databases | Seconds, single query |
| Full formulation screening | Weeks for 30 ingredients × 30 markets | Minutes |
| Regulatory change detection | Days to weeks (newsletters, consultants) | Real-time alerts with impact scoring |
| Upcoming regulation tracking | Ad hoc, depends on advisor network | Proactive forecasting, all jurisdictions |
| Packaging + labeling compliance | Separate process, separate consultants | Integrated in the same compliance scan |
Whether you are a chemical manufacturer entering new markets, a consumer goods brand reformulating products, or a regulatory affairs team managing a portfolio of 500+ SKUs across multiple countries — Cleo gives you the global chemical compliance intelligence that previously required an army of local consultants and weeks of manual research.
Frequently asked questions
How do I check the regulatory status of a chemical by CAS number worldwide?
Each CAS number can have different regulatory statuses across jurisdictions — freely allowed, concentration-limited, restricted, banned, or under review. Traditionally this requires consulting ECHA, EPA CompTox, NITE-CHRIP, IECSC, and dozens of national databases. AI-powered tools like Cleo can check a CAS number across 60+ jurisdictions instantly.
What regulations apply to chemical products in Mexico?
Mexico regulates chemical products through NOM standards (NOM-005, NOM-018 for hazardous chemicals), SEMARNAT environmental regulations, and COFEPRIS health authorization. Mexico is also developing a national chemical inventory aligned with GHS Revision 10, expected for 2026-2027.
How can I check if my entire product formulation is compliant across multiple countries?
Formulation compliance requires checking every CAS number against restricted substance lists, verifying concentration limits, determining hazard classifications per country's GHS implementation, and ensuring packaging and labeling comply with local requirements. For a product with 25 ingredients across 30 countries, that is 750+ individual checks — AI-powered platforms can do this in minutes instead of months.
What is the difference between REACH, K-REACH, and KKDIK?
REACH is the EU's chemical regulation requiring registration, evaluation, and authorization of chemical substances. K-REACH is South Korea's equivalent, with its own substance inventory and registration requirements. KKDIK is Turkey's adaptation of REACH, with registration deadlines that started in 2023. While structurally similar, each has unique inventory lists, registration thresholds, exemptions, and timelines.
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