If the fragrance chemicals suppliers does not respond to your written request for an updated Safety Data Sheet (SDS), treat it as a compliance gap and follow these steps immediately:

1. Document the attempt
Keep copies of the original request(s) and any follow-up e-mails or call logs dated within the last 30 days.

2. Use the most recent SDS as a base
Open the last SDS you received and, using the ingredient list and any new hazard information you are aware of, prepare an interim workplace SDS or annotate the existing one .

3. Add the missing information
Insert the date of your last attempted contact and note:
“fragrance chemicals suppliers has not provided an updated SDS as of [date]. This document reflects the best available information.”
Attach any significant new data you have found (new toxicology data, revised exposure limits, etc.) .

4. Review and refresh your hazard-prevention program
Re-train employees, verify that current PPE and engineering controls are still adequate, and adjust if the new data indicate higher risk .

5. Escalate formally
• Send a registered letter or formal notice demanding the SDS within 10 business days.
• If the fragrance chemicals suppliers remains silent, consider switching fragrance chemicals supplierss or reporting the non-compliance to the competent authority (e.g., ECHA, OSHA, or your national chemical agency), since the fragrance chemicals suppliers has a legal duty to provide the SDS upon request .

6. Contractual safeguard for the future
Add a clause to new purchase orders stating:
“Failure to deliver the current SDS within 5 working days of request entitles the buyer to withhold payment or terminate the order without penalty.”

By taking these actions you stay compliant, protect workers, and create leverage to force a timely response.