Built by chemists, not a marketing team

Chemply computes mixture hazard classification from real chemistry — every ingredient's hazard data and concentration, recalculated whenever a formulation changes. It's built by people who understand why that math has to be exact, not just convenient.

Why Chemply exists

Classification is a calculation, not a lookup — and the industry has spent twenty years pretending otherwise.

SDS authoring has been treated as a forms problem for twenty years: pick a template, fill in the fields, export a PDF. That's not what it is. Classifying a mixture under GHS means running ATE additivity for acute toxicity — math that depends on every ingredient's individual hazard data and concentration, recalculated every time a formulation changes. Get one input wrong and the signal word on the label is wrong too.

Most of the industry still does this by hand, in spreadsheets, or rents software that treats classification as a lookup rather than a calculation. Chemply was founded to close that gap: a platform where mixture classification is computed from real GHS mixture rules, not approximated from a template.

ATE additivity

Combines each ingredient's acute toxicity estimate, weighted by concentration, into a classification for the whole mixture.

Acute toxicity

Concentration limits

Evaluates each health and environmental endpoint against the cutoff values and concentration limits the framework defines.

Health & environment

Computed, not looked up

Every result is derived from each ingredient's data and concentration — never matched to a similar product or copied from a template.

By calculation

How classification works with us

Real data underneath, real GHS math on top, and a result that moves the moment a formulation does.

Every substance in Chemply's reference library carries the raw data its classification depends on — LD50/LC50 values by route, flash point with cup method, vapor pressure at a stated temperature — sourced from PubChem, EPA CompTox, and ECHA's harmonized classification inventory, and cross-validated against each other.

When you build a product from those substances, Chemply runs the mixture calculations for your chosen regulatory framework on top of them. Change a concentration, and the classification — and the resulting H-codes, signal word, and pictograms — updates with it. Nothing is approximated from a similar product.

1

Reference data, per substance

Each substance carries the raw values its classification depends on, cross-validated across independent sources.

PubChem EPA CompTox ECHA
2

Mixture classification engine

Build a product and Chemply runs the mixture rules on top — health, physical, and environmental endpoints alike.

ATE additivity Concentration limits Le Chatelier · Raoult
3

Classification that stays live

H-codes, signal word, and pictograms recompute the moment a concentration changes — never copied from elsewhere.

H-codes Signal word Pictograms
Inputs · Hydrochloric Acid 37%
LD50 (oral, rat)700 mg/kg
Flash pointNone (closed cup)
Vapor pressure @ 20°C190 hPa
Concentration37% w/w

Sourced from PubChem, EPA CompTox, and ECHA, cross-validated against each other.

Computed classification
Danger
H290 · Corrosive to metals H314 · Skin corrosion 1B H318 · Serious eye damage 1 H335 · STOT SE 3
GHS corrosion pictogram Corrosion
GHS exclamation mark pictogram Exclamation mark

Who it's for

The people who carry hazard communication risk day to day — not the ones who delegate it.

Chemply is built for the people who actually carry hazard communication risk: regulatory consultants managing libraries across many clients, formulators who need accurate classifications without a regulatory affairs department, and the larger organizations that need an auditable system of record behind every document they publish.

Independent regulatory consultants

Managing SDS libraries across multiple clients, each with its own catalog, history, and audit trail — kept cleanly separate.

Chemical formulators

Industrial and institutional cleaning, metalworking fluids, and coatings, adhesives and sealants teams who need accurate classifications without a regulatory affairs department.

Larger organizations

Teams that need an auditable system of record standing behind every document they publish — defensible from draft to label.

The company

Chemply is built by a team with a chemistry and a software engineering background — the combination the product needed to exist: someone who understood both why GHS mixture math has to be exact and how to build software that computes it correctly every time, not just the first time.

Classification computed, not approximated.

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