AD+CVD ORDERS China A-570-008 (AD)C-570-009 (CVD)

U.S. Antidumping and Countervailing Duties on Calcium Hypochlorite from China (A-570-008 / C-570-009)

This is an educational summary — NOT a scope determination or filing advice. It does not decide whether your specific goods are covered. Always verify against the latest U.S. Commerce and CBP instructions.

Calcium hypochlorite from China may be subject to both a U.S. antidumping order (A-570-008) and a countervailing duty order (C-570-009).

Case snapshot

Product	Calcium Hypochlorite
Country	China
Case type	AD+CVD
Case number(s)	A-570-008 (AD) · C-570-009 (CVD)
Status	Active / continued
Scope control	Commerce written scope language
HTS role	Reference / screening only
Rate note	Varies by exporter/producer and administrative review

Key dates

A-570-008 (AD)	Federal Register: 2026-01 FR notice 2025-24162 (Opportunity to Request Review)
C-570-009 (CVD)	Federal Register: 2026-01 FR notice 2025-24162 (Opportunity to Request Review)
Status as of	Active — 2026-07-03
Expiration	No fixed expiration date. AD/CVD orders remain in place subject to five-year sunset reviews, and stay active unless revoked after Commerce/ITC review or other Commerce action.
Last checked by ETDETA	2026-07-03

Effective/entry-specific deposit and liquidation treatment depends on Commerce and CBP instructions, not only the publication date.

The U.S. Department of Commerce maintains both an antidumping (AD) order, case A-570-008, and a countervailing duty (CVD) order, case C-570-009, on calcium hypochlorite from China. Importers of this chemical may face AD and/or CVD cash-deposit requirements at entry and should verify how these orders apply to their specific goods.

Scope — simplified screening examples, not full legal scope

The official written scope controls. The examples below are screening references only.

Products that may be covered (examples)

•Calcium hypochlorite in dry granular form that may include water-treatment or pool-sanitizing grades
•Calcium hypochlorite in tablet or briquette form that may be used for disinfection
•Calcium hypochlorite in powder form
•Bulk calcium hypochlorite shipped for industrial or municipal water treatment
•Calcium hypochlorite regardless of concentration where it remains the covered chemical per scope
•Repackaged or relabeled calcium hypochlorite that may still fall within the written scope

Products that may require separate review or may fall outside this order

?Sodium hypochlorite (liquid bleach), which is a different chemical and may fall outside this scope
?Other chlorine-based sanitizers such as trichloroisocyanuric acid or dichlor that may not be the covered product
?Finished consumer goods that are not the calcium hypochlorite chemical itself (hedge; verify with scope)
?Chemicals of a country of origin other than China (though origin must be substantiated)
?Products where calcium hypochlorite is not the material covered by Commerce's written scope

Scope control: Any HTS codes are screening references only; Commerce's written scope language controls whether a product is covered, and blends, various concentrations, or repackaged forms may still be within scope depending on that language.

Who it affects

This typically matters for importers, distributors, and end-users of calcium hypochlorite used in water treatment, pool and spa sanitation, and industrial disinfection who source from or through China.

What the duty means

Covered goods generally require AD and/or CVD cash deposits at the time of entry; rates vary by exporter/producer and administrative review and can be high. A 0% cash-deposit rate is NOT an exemption — the order still applies and entries must be declared, and because both AD and CVD orders exist, deposits under both may apply.

Importer checklist — how to assess your risk

☐Gather the commercial invoice with the exact product description and grade
☐Collect product photos, spec sheets, and safety data sheets showing chemical identity and concentration
☐Confirm the material composition to verify the product is calcium hypochlorite versus another chlorine compound
☐Document the intended use (water treatment, pool sanitation, industrial disinfection)
☐Assemble country-of-origin support tracing manufacture back to the producer
☐Identify the specific manufacturer, producer, and exporter names and the exact producer/exporter combination
☐Review HTS classification as a screening step, not as a scope determination
☐Confirm scope applicability with a licensed customs broker or trade counsel rather than relying only on supplier statements
☐Verify the applicable cash-deposit rate against current Commerce results and CBP AD/CVD messages before filing

Risks to watch

⚠Circumvention or transshipment findings if goods are routed through third countries to disguise Chinese origin
⚠Scope inquiries that could clarify whether a particular grade or form is covered
⚠Applying the wrong exporter/producer combination and therefore the wrong deposit rate
⚠Misdeclaration or failure to declare, which can lead to penalties and retroactive duty liability

The same chemical can be subject to trade remedies from more than one country over time, so importers should independently confirm the origin and any applicable orders for each source without engaging in any evasion of duties.

FAQ

Is there antidumping duty on calcium hypochlorite from China?

Commerce maintains an antidumping order on calcium hypochlorite from China under case A-570-008, and a separate countervailing duty order under case C-570-009; whether your specific goods are covered depends on Commerce's written scope, so importers should verify before entry.

Does a 0% deposit rate mean no duty?

No. A 0% cash-deposit rate is not an exemption — the order still applies, entries must be declared, and rates can change through administrative reviews. Always confirm the current rate for your exporter/producer combination.

Are parts or unassembled calcium hypochlorite covered?

Calcium hypochlorite is a chemical rather than an assembled product, but different forms, concentrations, or repackaged versions may still fall within Commerce's scope; importers should verify the written scope language for their specific product.

Possible risk

Risk signal: Higher concern if the goods are calcium hypochlorite of Chinese origin; a separate review is needed for blends, differing concentrations, repackaged goods, and any third-country processing before assuming how the orders apply.

Bottom line: Calcium hypochlorite from China may be covered by AD case A-570-008 and CVD case C-570-009; confirm scope, origin, exporter/producer identity, and current deposit rates before entry.

Not a scope determination or filing advice — confirm coverage and current deposit rates with a licensed customs broker and the latest Commerce/CBP instructions before entry.

Official sources

These links are for source verification. Confirm the latest applicable rate and instructions with Commerce/CBP before entry.

· Federal Register notice (2026-01 FR notice 2025-24162 (Opportunity to Request Review))
· Commerce ACCESS — AD/CVD proceedings & scope rulings
· CBP ACE AD/CVD case search & messages
· USITC sunset/injury reviews
HTS codes are provided for reference/screening only.

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Educational summary of a public U.S. Department of Commerce AD/CVD order — not legal advice, a customs broker opinion, or a scope determination. Whether specific goods fall within an order's scope must be confirmed with a licensed customs broker and the latest Commerce/CBP notices.

Last updated: 2026-07-04