ESG Requirements for Chemical Suppliers: TfS, REACH & Customer Questionnaires

If you supply chemicals, ingredients or materials to industrial and consumer-goods customers, you're pulled in three directions at once: an industry sustainability scheme (TfS), a regulatory regime (REACH and its cousins), and each customer's own questionnaire. This guide untangles the three so you can see what's actually required and prepare one evidence base that serves all of them — chemicals is one sector in our ESG-requirements-by-industry overview.

The three streams of demand

Chemical suppliers rarely face a single "ESG requirement." You're usually managing three overlapping streams:

1. Together for Sustainability (TfS) — the chemical industry's shared sustainability assessment scheme.
2. Regulatory compliance — REACH, CLP, and related substance regulations.
3. Direct customer questionnaires and audits — buyer-specific ESG and safety requests.

They overlap heavily in the underlying facts, which is the good news: prepare once, answer everywhere.

Stream 1: Together for Sustainability (TfS)

TfS is a procurement initiative founded by major chemical companies on the principle "an audit for one is an audit for all." You complete one TfS Assessment (a desk-based evaluation run on EcoVadis methodology) or Audit (on-site), and the result is shared with the TfS member companies you supply.

If a chemical customer has invited you to TfS specifically, the mechanics — the two tracks, the evidence, the scoring — are covered in Together for Sustainability (TfS): what chemical suppliers need to know. Because the assessment runs on EcoVadis methodology, the EcoVadis supplier guide applies too — and the free EcoVadis readiness check will show you where you'd currently stand against that methodology.

Stream 2: REACH and regulatory compliance

REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) and related rules aren't an ESG questionnaire — they're the law — but customers routinely fold compliance questions into their ESG requests, because your regulatory standing is part of their supply-chain risk. Expect to demonstrate:

• Registration status of the substances you place on the market.
• Safety Data Sheets (SDS) — current, compliant, and available to customers.
• Substances of Very High Concern (SVHC) — awareness and communication obligations.
• Restricted and authorised substances — that you're not supplying anything banned or that requires authorisation you don't hold.
• CLP classification and labelling — correct hazard classification.

Keep your SDS library and substance register current and accessible — it's the documentation customers ask for most, and the easiest to fall behind on.

Stream 3: Customer questionnaires and audits

On top of TfS and regulatory items, individual customers send their own ESG questionnaires. These typically cover:

• Environment — energy, emissions, water, waste, and hazardous-substance/chemicals management.
• Process and site safety — a heavyweight for chemicals: process safety management, incident data, emergency preparedness.
• Labour and human rights — working conditions, no forced/child labour, fair wages.
• Ethics and governance — anti-corruption, supplier code of conduct, whistleblowing.
• Sustainable procurement — how you assess your own upstream suppliers.

Some customers add an on-site audit for physical verification, particularly for manufacturing sites.

Build one evidence base for all three

The three streams ask for the same underlying facts in different wrappers. Assemble these once:

• Substance and regulatory documentation — REACH registrations, SDS library, substance register, SVHC communications.
• Environmental data — energy, emissions, water, waste, hazardous-waste handling.
• Process safety — safety management system, incident records, training, emergency plans.
• Certificates — ISO 14001, ISO 45001, ISO 9001, Responsible Care.
• Labour and HR — policies, payroll/hours evidence, training.
• Governance — code of conduct, anti-corruption policy, supplier assessment process.

With that in place, a TfS assessment, a customer questionnaire, and a REACH-compliance request all draw on the same source. That's the logic behind a reusable response system. For the environmental numbers themselves, the free carbon calculator covers the energy and emissions piece if you haven't calculated it before.

What not to do

• Don't let your SDS or registrations lapse. Out-of-date regulatory documents are the fastest way to fail a customer's compliance check.
• Don't invent emissions or safety figures. Chemical customers scrutinise safety data especially; report what you can prove.
• Don't treat REACH and ESG as separate silos. Customers increasingly ask about them together — manage them as one evidence base.
• Don't repeat work. If you hold a current EcoVadis or TfS result, check whether it can satisfy a customer's request before starting a new questionnaire.

The bottom line

Chemical suppliers juggle three streams — TfS, regulatory compliance (REACH and friends), and customer questionnaires — but they draw on one shared set of facts about your substances, safety, environment, labour and governance. Build that evidence base once, keep the regulatory documents current, and let one credible foundation answer all three.