The Carbon Number on Your Colorant Line

By Jane Palmer, Founder & CEO, Nature Coatings

SUMMARY: Carbon black is one of the most emissions-intensive inputs in a textile supply chain, and Scope 3 filings are about to put that number in front of every brand you sell into.

Global carbon black production emits somewhere between 29 and 79 million metric tons of CO2 every year. A meaningful slice of that ends up embedded in textiles.

Scope 3 is where the textile industry's carbon math gets uncomfortable. For fashion brands, Scope 3.1, purchased goods and services, accounts for roughly 90 percent of total emissions. The energy used in wet processing, the fuel used in shipping, and the feedstocks that go into chemicals and pigments all roll up into that category. Every brand filing under the California Climate Corporate Data Accountability Act will be calculating this number for 2027 disclosure. The primary data pulls have already started.

Carbon black sits in an awkward spot on that ledger. Global production runs over 15 million metric tons per year. The production footprint, depending on feedstock and process, emits in the range of 29 to 79 million metric tons of CO2 annually. That is before a single kilogram of the pigment enters a mill, a dispersion, or a fiber. The embedded carbon is already in the ingredient before you buy it.

Apply that to a mill's internal math. If you run your own dispersion line, the carbon black feedstock shows up in your Scope 1 through on-site energy and in your Scope 3 through the upstream emissions of the raw material. If you buy finished dispersion, the entire footprint lands in Scope 3. Either way, when a brand partner asks for primary data on the colorants you use, you are handing them a number that is high by every benchmark regulators care about.

BioBlack TX was built to change that math. It is a plant-based black pigment dispersion made from FSC-certified recycled wood waste. The feedstock is a diverted waste stream, not a petroleum refinery output. The embodied carbon profile is materially lower than the carbon black it replaces. It is engineered to run on mainstream mill equipment, matching the shade depth and fastness formulators need to hit production specs without reformulation.

The Scope 3 math on substitution is what makes this a procurement conversation, not just a sustainability conversation. Brands do not get to a credible reduction target by trimming the edges. They get there by replacing high-intensity inputs with lower-intensity alternatives at scale. A bio-based textile coating strategy that includes the colorant line is one of the higher-leverage moves available to a brand's supply chain team. It moves a number on a filing, not just a claim on a tag.

There is a second reason this matters to mills specifically. Brands are using Scope 3 data to select supply partners. When two mills can deliver comparable shade and hand at comparable price, the one with cleaner embedded carbon on the colorant line wins the next season's order. That is not a forecast. It is already happening inside the brands we sell into. Procurement teams are asking for emissions data alongside cost and capacity. Mills that have an answer get the call back.

I have watched the textile conversation shift over the last two years. Carbon intensity used to be a topic for sustainability roundtables. Now it is a line on a purchase spec. The mills that get ahead of it will have a clean answer ready when the brand calls. The ones that do not will be scrambling to explain a number that their competitor has already dropped.

The colorant line is not the only place to find a Scope 3 reduction. It is one of the simpler ones. The substitution is straightforward. The performance is there. The data story is defensible. And the filing deadline is a lot closer than most teams have priced in.

Click to learn more about how BioBlack TX can reduce emissions in Textiles.