CAS 7757-82-6 · TSCA · United States of America

Sodium sulfate (Glauber's salt) under TSCA

Na2SO4 · 硫酸钠

Status: Listed. Sodium sulfate is on the TSCA Inventory and currently listed as TSCA Active. **No OSHA PEL specifically listed for sodium sulfate at 29 CFR 1910.1000 Table Z-1 (verify against https://www.osha.gov/annotated-pels); the OSHA Particulates Not Otherwise Regulated (PNOR) framework provides 15 mg/m3 total dust + 5 mg/m3 respirable as default for nuisance dust (verify against osha.gov before relying).** NOT on EPA RMP threshold list. NOT on DEA scheduling. NOT on California Proposition 65 (verify against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before relying on negative listing). NO active US AD/CVD case on Chinese-origin sodium sulfate currently (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin sodium sulfate (HS 283311 / 283319) (verify against current USTR Section 301 schedule before invoicing). USP / NF monograph applies for pharma-grade sodium sulfate. Major US domestic producers (verify each company-site pair against the producer's public website before relying): Searles Valley Minerals Trona California natural sodium sulfate operations from Searles Lake, Cooper Natural Resources Brownfield Texas natural sodium sulfate operations from West Texas brine.

US sodium sulfate lane: **No OSHA PEL specifically listed (PNOR framework default) + Section 301 List 3 + USP / NF for pharma-grade**. NOT on Cal Prop 65. NO active US AD/CVD case. Major US producers: Searles Valley Minerals (California Searles Lake natural), Cooper Natural Resources (Texas West Texas brine natural).

Import Card

Before you order sodium sulfate (Glauber's salt) from China, see its register listing, the duty, anti dumping cases and a supplier check on one card, each with its source and date.

Card for the US Card for Australia

Listing and threshold

Substance Sodium sulfate (Glauber's salt) (CAS 7757-82-6), Na2SO4
Regime US Toxic Substances Control Act (TSCA), administered by EPA
Jurisdiction United States of America
Status Listed
Tonnage threshold CDR threshold: 25,000 lb manufactured or imported per site per year

Classifications under this regime

  • OSHA HCS: NOT typically classified as hazardous beyond particulate dust
  • No OSHA PEL specifically listed; OSHA PNOR framework: 15 mg/m3 total dust + 5 mg/m3 respirable default (verify against https://www.osha.gov/annotated-pels)
  • NOT subject to TSCA Section 6 Risk Evaluation
  • NOT on EPA RMP threshold list
  • NOT on DEA List I or List II
  • NOT on California Proposition 65 list (verify against OEHHA before relying on negative listing)
  • DOT 49 CFR 172.101: NOT regulated
  • **USP / NF monograph** applies for pharma-grade sodium sulfate
  • IARC: Not classified

Restrictions and conditions of use

  • NO active US AD/CVD case on Chinese-origin sodium sulfate currently
  • Section 301 List 3 25% additional duty applies on Chinese-origin sodium sulfate (HS 283311 / 283319)
  • OSHA PNOR particulate-dust framework applies
  • USP / NF monograph for pharma-grade

Importer obligations

TSCA self-certification regime. Major US producers (verify each producer-site pair before relying): Searles Valley Minerals Trona California (natural from Searles Lake), Cooper Natural Resources Brownfield Texas (natural from West Texas brine).

Required documents

  • TSCA Section 13 Import Certification on customs entry
  • OSHA SDS (with particulate dust handling notes)
  • CBP Form 7501 with HS 283311 / 283319 + Section 301 List 3 25% duty
  • CDR filing every 4 years
  • USP / NF certification for pharma-grade

Common compliance traps

The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.

  • No OSHA PEL specifically listed; PNOR framework default applies
  • NO active US AD/CVD case on sodium sulfate itself
  • Section 301 List 3 25% additional duty applies
  • USP / NF monograph for pharma-grade
  • Major US producers: Searles Valley Minerals Trona CA (Searles Lake natural), Cooper Natural Resources Brownfield TX (West Texas brine natural) (verify each producer-site pair)

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for sodium sulfate (glauber's salt), see the CAS 7757-82-6 sourcing reference.

For the structure and history of TSCA, see the TSCA glossary entry.

Need cross-jurisdiction compliance support on this substance? Run it through the REACH / TSCA / IECSC / AICIS / K-REACH checker, or send us the substance and the destination and we will quote FOB China and CIF / DDP landed including the regulatory work on the destination side.

Read next

Cross-jurisdiction profile and sourcing references

Referenced in

5 pages across the Sourzi moat

This term shows up in 4 regulatory pages, 1 CAS profiles. Sample backlinks per content type below.

Regulatory (4)

Plus 1 more regulatory pages.

CAS (1)

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