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SITCSection 5
U.S. imports of hypochlorites, commercial calcium hypochlorite, chlorites & hypobromites (SITC 52331) totaled $4.0M in April 2026, traded with 16 countries.
Importers of Hypochlorites, Commercial Calcium Hypochlorite, Chlorites & Hypobromites paid $91K in duties in April 2026 — an effective duty rate of 16% on $555K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataCommercial calcium hypochlorite — the granular or tablet form widely used in swimming pool sanitation and municipal water treatment — anchors this group alongside sodium hypochlorite (liquid bleach), chlorites, and hypobromites. Classification hinges on the specific salt and its commercial grade: calcium hypochlorite is distinguished from sodium hypochlorite and from chlorites, each of which may carry different duty treatment. Importers should verify whether a shipment qualifies as "commercial" calcium hypochlorite versus a laboratory-grade or dilute solution, as that distinction drives the correct tariff line. These oxidizing chemicals are also subject to EPA and DOT hazardous-materials regulations governing labeling, packaging, and port handling.
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Commercial calcium hypochlorite is a solid or granular product with a high available-chlorine content sold for industrial or pool use, whereas sodium hypochlorite is typically a liquid solution (bleach). The distinction matters because each falls under a different tariff line within this group; importers should confirm the chemical identity and concentration on the commercial invoice to ensure correct classification.
Calcium hypochlorite is classified as a strong oxidizer under DOT regulations, requiring compliant packaging, labeling, and placarding during transport. EPA may also require compliance with TSCA import certification. Importers should work with a licensed customs broker and a hazmat compliance specialist before shipment.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $3.2M | $1.8M | -$1.4M |
| MEXICO | $185K | $264K | +$79K |
| INDIA | $338K | $17K | -$321K |
| KOREA, SOUTH | $16K | $127K | +$112K |
| CHINA | $88K | $6K | -$82K |
Monthly import values over time