Producer
Cabot Norit (Cabot Corporation)
American specialty chemicals company (NYSE: CBT, HQ Boston MA; ~$4B revenue); Cabot Norit activated carbon division is world's largest producer of activated carbon/activated charcoal for gas purification, water treatment, and pharmaceutical applications. In helium PSA (Pressure Swing Adsorption) purification plants, Cabot Norit activated charcoal beds at cryogenic temperatures adsorb trace impurities (neon, hydrocarbons, trace organics) from raw helium streams. Cabot Norit's activated carbon is simultaneously used in: helium plant gas purification, municipal water treatment (removing chlorine, THMs, and pharmaceuticals), air purification masks (same activated charcoal in military gas masks and HVAC filters), and pharmaceutical drug purification (decolorization of pharmaceutical intermediates). The same activated charcoal that cleans hospital water systems also purifies the helium that cools MRI superconducting magnets.
3
Inputs supplied
3
Goods downstream
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Facilities
0
Stories
What they make
3 inputs Cabot Norit (Cabot Corporation) supplies
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manufactured
Bone char and granular activated carbon (GAC) →
chemical
PSA purification adsorbents (activated charcoal / molecular sieves) →
manufactured
Activated carbon (GAC and carbon block) →
Where it shows up
Goods downstream
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What else they do
Business segments
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Reinforcement Materials (Carbon Black)
52%Performance Chemicals (Fumed Silica & Specialty Carbons)
28%Activated Carbon (Norit)
20%
Intelligence
What's known
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Did you know2023
Cabot Norit activated carbon (Cabot Corporation; Boston MA; world's largest activated carbon producer) is used in three entirely unrelated supply chains simultaneously: (1) helium plant PSA purification — activated charcoal at cryogenic temperatures adsorbs trace neon, hydrocarbons, and organic impurities from raw helium streams before liquefaction; (2) municipal and industrial water treatment — activated carbon removes chlorine disinfection byproducts (THMs, HAAs), pharmaceuticals, and taste/odor compounds from drinking water; (3) pharmaceutical manufacturing — activated charcoal decolorizes pharmaceutical intermediates and APIs during synthesis. The same Cabot Norit activated charcoal that appears in helium plants at -200°C also appears in drinking water filtration at room temperature and in pharmaceutical reactors at elevated temperatures — three industrial applications spanning a 400°C temperature range, with the same carbon material performing different separation functions in each.
Cabot Corporation ↗Origin2023
Cabot Corporation was founded in 1882 by Godfrey Lowell Cabot in Boston — initially producing "lamp black" (carbon black) by burning natural gas to collect the carbon soot, used as a pigment for printing inks. Godfrey Cabot was also a pioneer aviator and a celebrated spy (he ran intelligence networks for the US during WWI and WWII). Carbon black for tire reinforcement became Cabot's dominant product as the automotive industry grew in the 1920s — natural rubber alone cannot withstand tire stress, but rubber reinforced with carbon black delivers the required durability. Cabot acquired Norit N.V. (Netherlands; world's largest activated carbon producer) in 2012 for ~$400M, expanding from specialty carbon products into activated carbon for water treatment and gas purification — applying Cabot's carbon chemistry expertise to pore-engineered activated charcoal.
Cabot Corporation ↗