How carbon declarations are entering concrete tenders
What this tab covers How it is regulated and what could disrupt supply: hazard classification, rules in the EU, US and India, anti-dumping duties and other trade measures, and supply-risk notes.
Hazards
Classification
UN number
Key risks
most admixtures unclassified or mild irritants; isocyanates respiratory sensitisers; epoxy resins skin sensitisers; cement-based products cause skin and eye damage
varies by product; none for most admixtures
Worker exposure to isocyanates and epoxy in floors and sealants; chromium(VI) in cement-based mortars.
Main rules
Where
Rule
Effect
EU
EN 934-2 admixture standard and CE marking; REACH diisocyanate restriction requiring training (from Aug 2023); EN 15804 EPDs
EPDs and low-carbon concrete criteria are entering public tenders.
US
ASTM C494 admixture specification; Buy Clean rules requiring EPDs for concrete in some states
Pushes producers to publish carbon data for mixes.
India
Rule
Effect
BIS IS 9103 concrete admixtures; IS 456 code of practice for concrete
Sets performance requirements for admixtures used in structural concrete.
BIS quality control orders on some construction products (indicative)
Raise compliance cost for importers.
Trade measures
No anti-dumping duty on construction chemicals found in sources reached
Supply risk
Low: formulation is local and inputs are widely available. The main exposure is to ethylene oxide and acrylic acid prices, which rose with oil in 2026.