New 16-section MSDS format comparison showing old vs new required fields for imported chemicals

China has released revised GB/T MSDS standards, effective April 1, 2026. The updated standard (GB/T 16483‑2026 and GB/T 17519‑2026) mandates a new 16‑section Safety Data Sheet (SDS) format for all imported hazardous chemicals. The new format aligns with GHS Rev. 8 and introduces stricter disclosure requirements for nanomaterials, endocrine disruptors, and PBT/vPvB substances. Customs authorities began enforcing the new format on May 1, 2026. This guide explains the key changes, section-by-section requirements, and practical steps for chemical importers.

1. Key Changes – 16-Section Format & GHS Rev. 8 Alignment

The 2026 GB/T MSDS standards replace the 2008 versions. The most significant changes include:

  • Mandatory 16‑section format: Sections must be numbered and ordered exactly as specified. No deviations or omissions permitted.
  • GHS Rev. 8 alignment: New hazard categories added: endocrine disruptors, PBT (persistent, bioaccumulative, toxic), and vPvB (very persistent, very bioaccumulative) substances.
  • Expanded Section 9 (Physical & Chemical Properties): New mandatory fields: particle size (for nanomaterials), viscosity, and auto‑ignition temperature.
  • Stricter Section 14 (Transport Information): New required fields: IMDG Code reference, packing group, and environmental hazards.
  • Updated Section 11 (Toxicological Information): Data on endocrine disruption and reproductive toxicity now required where available.

MSDS documents prepared under the 2008 standards are no longer accepted for imported hazardous chemicals after May 1, 2026.

⚠️ Critical deadline: MSDS documents using the old 2008 format are rejected by customs after May 1, 2026. Shipments may be detained or refused entry.

2. Section-by-Section Requirements – What’s New

The 16 sections must appear in the following order with mandatory content:

  • Section 1 – Identification: Product identifier must include the chemical name and CAS number. Supplier‘s emergency phone number (24/7) required.
  • Section 2 – Hazard Identification: New GHS hazard categories (endocrine disruptors, PBT, vPvB) must be listed. Signal word, hazard statements (H‑codes), and precautionary statements (P‑codes) required.
  • Section 3 – Composition/Information on Ingredients: For mixtures, all hazardous ingredients above 0.1% must be disclosed (previously 1%). Confidential business information (CBI) claims require CNCA approval.
  • Section 4 – First Aid Measures: No major changes.
  • Section 5 – Firefighting Measures: No major changes.
  • Section 6 – Accidental Release Measures: No major changes.
  • Section 7 – Handling and Storage: Incompatible materials must be explicitly listed.
  • Section 8 – Exposure Controls/Personal Protection: Occupational exposure limits (OELs) must be provided if available.
  • Section 9 – Physical and Chemical Properties: New mandatory fields: particle size (for nanomaterials), viscosity, auto‑ignition temperature, and odor threshold.
  • Section 10 – Stability and Reactivity: Conditions to avoid must be specified.
  • Section 11 – Toxicological Information: Endocrine disruption potential, reproductive toxicity, and target organ effects required.
  • Section 12 – Ecological Information: PBT and vPvB assessment required for all substances.
  • Section 13 – Disposal Considerations: No major changes.
  • Section 14 – Transport Information: IMDG Code reference, packing group, marine pollutant designation required.
  • Section 15 – Regulatory Information: China‘s Inventory of Existing Chemical Substances (IECSC) listing status required.
  • Section 16 – Other Information: Revision date and abbreviation list required.

Missing any mandatory field or deviating from the section order results in customs rejection.

3. Nanomaterial Disclosures – New Section 9 Requirements

For chemicals containing nanomaterials (particles<100 nm), the 2026 standard requires specific disclosures in Section 9:

  • Particle size distribution: D10, D50, D90 values (in nm).
  • Specific surface area: BET surface area (m²/g).
  • Shape and morphology: Spherical, fibrous, platelet, or other.
  • Surface chemistry: Coatings or functionalization.
  • Agglomeration state: Primary particle vs. agglomerate size.

If the chemical does not contain nanomaterials, a statement “Not applicable – no nanomaterial content” must be included. Failure to address nanomaterials (either disclosure or negative statement) is a common rejection reason.

🔬 Nanomaterial testing: If you are unsure whether your chemical contains nanomaterials, conduct testing via a CNAS‑accredited lab. Estimates or supplier claims alone may not satisfy customs.

4. Endocrine Disruptors & PBT/vPvB – New GHS Hazard Categories

The 2026 standard adopts GHS Rev. 8 hazard categories:

  • Endocrine disruptors (H‑code EUH380, EUH381): Chemicals known or presumed to cause endocrine disruption in humans or the environment must be disclosed in Section 2 and Section 11.
  • PBT (Persistent, Bioaccumulative, Toxic) substances: Assessment required in Section 12. If criteria are met, the substance must be identified as PBT.
  • vPvB (very Persistent, very Bioaccumulative) substances: Similar assessment required.

Importers must obtain this hazard classification from the chemical manufacturer. Generic MSDS templates may not include these categories; verify with your supplier.

5. Chinese Translation Requirements

The MSDS must be presented entirely in simplified Chinese. Bilingual versions (English + Chinese) are accepted, but Chinese must be equally prominent. Key requirements:

  • Certified translation: Machine translations (Google Translate, DeepL) are not accepted. Use a certified translator or a China‑based MSDS authoring service.
  • Consistent terminology: Hazard statements (H‑codes) and precautionary statements (P‑codes) must use the exact wording from GB/T 16483‑2026 Appendix C. Freely translated statements are rejected.
  • Units of measure: Metric units (mg/m³, °C, g/cm³) required. Imperial units (ppm, °F) are not accepted unless accompanied by metric equivalents.

The importer (China agent) is responsible for ensuring the accuracy of the Chinese translation. Errors discovered during customs inspection may result in shipment detention.

6. Customs Enforcement – What to Expect

As of May 1, 2026, customs officers are checking MSDS compliance for all imported hazardous chemicals. Key inspection points:

  • 16‑section format: Section numbers and order are checked first. Any deviation results in immediate rejection.
  • Nanomaterial disclosure: Section 9 must include particle size data or negative statement.
  • New hazard categories: Endocrine disruptors and PBT/vPvB must be addressed (even if “not classified”).
  • Chinese language: Chinese translation must be complete and accurate.
  • Revision date: MSDS must be revised within the last 3 years. MSDS older than 3 years are rejected.

Non‑compliant MSDS result in shipment detention. Importers have 15 days to submit corrected MSDS; after that, goods may be returned or destroyed.

⏱️ Detention timeline: 15 days to correct MSDS after rejection notice. Extensions are rarely granted. Plan ahead to avoid costly storage fees.

7. Practical Compliance Roadmap for Chemical Importers

To ensure MSDS compliance under the new GB/T standards, follow this six‑step roadmap:

  1. Inventory all imported hazardous chemicals (Immediate). List all chemical products imported into China. Identify which require MSDS under the new standard.
  2. Obtain updated MSDS from suppliers (Month 1). Request MSDS in the new 16‑section format. Verify that GHS Rev. 8 hazard categories (endocrine disruptors, PBT) are addressed.
  3. Commission certified Chinese translation (Month 1). Use a professional translator with chemical industry experience. Verify hazard statement wording against GB/T 16483‑2026.
  4. Validate nanomaterial content (Month 2). If nanomaterials may be present, conduct testing or obtain supplier declaration. Include particle size data in Section 9.
  5. Submit MSDS to customs broker for pre‑clearance review (Month 2). Have your broker check the MSDS against the new requirements before shipping.
  6. Retain MSDS and supporting documents (Ongoing). Keep MSDS and translation certification for 5 years. Update MSDS whenever product formulation changes.
🚀 Need help updating your MSDS to the new 16-section China format? Contact a China chemical compliance partner for a free MSDS gap assessment. Our experts will review your existing MSDS, prepare the new 16‑section format, and provide certified Chinese translations. Request your free consultation today.

Summary: China‘s revised GB/T 16483‑2026 and GB/T 17519‑2026 MSDS standards, effective April 1, 2026, mandate a new 16‑section format aligned with GHS Rev. 8. Key changes include mandatory nanomaterial disclosures (Section 9), new hazard categories (endocrine disruptors, PBT, vPvB), and stricter Chinese translation requirements. Customs enforcement began May 1, 2026. MSDS using the old 2008 format are rejected. Importers must obtain updated MSDS from suppliers, commission certified Chinese translations, disclose nanomaterial content, and address new hazard categories. By following the compliance roadmap – inventorying chemicals, verifying supplier MSDS, and validating nanomaterials – importers can avoid customs detention and ensure smooth clearance.