Overview
The number 190690209 does not represent a valid CAS Registry Number, as confirmed by searches in SciFinder, PubChem, and other authoritative chemical databases. CAS numbers follow a strict format: 2-7 digits, a hyphen, 2 digits, another hyphen, and a single check digit. The provided number fails both structural validation and database verification. CAS (Chemical Abstracts Service) numbers are unique identifiers assigned to every chemical substance described in open scientific literature since 1965. Each valid CAS number undergoes algorithmic verification for its check digit, which 190690209 does not pass. This suggests either a transcription error or a fabricated identifier.
Physical and Chemical Properties
No physical or chemical properties can be described for this identifier as it does not correspond to any known substance. Valid CAS numbers are prerequisites for obtaining technical data sheets or safety information. When encountering an unverified CAS number like 190690209, industrial buyers should first cross-check with suppliers for possible typographical errors. Common mistakes include transposed digits (e.g., 190690209 vs. 190690299) or omitted hyphens in formatted CAS numbers.
Main Applications
Not applicable for an invalid CAS number. In industrial contexts, proper substance identification is critical for regulatory compliance (REACH, TSCA), safety protocols, and technical specifications. For reference, legitimate CAS numbers are essential for: 1) SDS documentation under GHS standards, 2) customs declarations for chemical shipments, and 3) patent applications involving chemical compositions. Always verify identifiers before incorporating them into business processes.
Safety and Storage
No safety guidelines can be provided for an unassigned CAS number. Chemical handling procedures always require verification of the actual substance through multiple identifiers (CAS, IUPAC name, molecular formula). Best practices dictate consulting the original supplier for clarification when encountering invalid identifiers. Many chemical manufacturers provide batch-specific certificates of analysis that include verified CAS numbers and purity information.
B2B Procurement Guide
When procuring chemicals with questionable identifiers: 1) Request the supplier's technical datasheet showing the verified CAS number, 2) Check the European Chemicals Agency (ECHA) or US EPA CompTox databases for alternative identifiers, 3) Consider third-party testing for unknown substances. For reference, valid CAS numbers appear in invoices, shipping documents, and safety data sheets. The absence of a verifiable CAS number may indicate non-compliant substances or mislabeled materials, posing legal and operational risks.
Related Manufacturers
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