SDS sources & collection methods

Official reference sources

Each reference links to its originating organization. RESDS is an independent document library; these links do not imply endorsement or certification.

Reference field	Source	Scope
CAS RN & chemical identity	CAS Common Chemistry ↗	Look up the CAS record. Not every CAS RN is in the public collection.
Chemical name, formula, molecular weight, synonyms & structure	PubChem · NCBI / NLM / NIH ↗	Compound reference data; individual entries may include contributed information.
Global classification & labelling framework	United Nations · UNECE GHS ↗	GHS Rev.11 (2025). A framework, not a product-specific hazard classification.
European Union · CLP & substance information	ECHA / ECHA CHEM ↗	Check harmonised classifications separately from company notifications.
Australia · industrial chemical inventory	AICIS ↗	Search the inventory by CAS RN. Inventory listing is not a safety approval.

Product composition, grade, hazards, handling and revision dates remain those of the original publisher SDS. Reference properties are displayed only after a single PubChem compound result and an exact CAS synonym match. A matching CAS does not independently certify product composition. Values carry their retrieval date; missing or ambiguous matches remain official lookup links.

About this collection

RESDS is a public reference library for rare earth material documents. The publisher named on each record is the document’s original supplier or issuing organization. RESDS hosts a copy; it does not issue, certify or endorse that SDS.

Original files and searchable text

Original PDFs are retained and identified by a SHA-256 file checksum. A matching checksum identifies the same file; it does not verify the accuracy of its safety statements. Full text is extracted page by page in the original language. OCR is identified where used. Formatting, tables, symbols and recognition errors must be checked against the original PDF.

Dates, materials and versions

The original SDS revision is copied from the document. “Added to RESDS” is the date this copy was published here, and “Record updated” is the date its substantive website content changed. Neither means the supplier revised the SDS on that date. All versions held here remain available; ask the supplier for its latest applicable version.

Material indexes use product-identification metadata. Element associations use the original identification and composition sections, with page references shown on each document. They do not infer composition from incidental words elsewhere in the SDS. CAS-reference indexes may include mixture components. An unclassified record remains searchable. Community uploads and source links are not automatically independently verified.

Original source register

1797 documents · Source links below are retained as supplied or collected. A link may move or become unavailable at the original publisher.

Document	Publisher	Original revision	Added to RESDS	Source
Cerium (III) carbonate, hydrate 1411-1 SDS – ProChem, Inc.	ProChem, Inc.	08/22	2026-09-14	Original source
Cerium (III) chloride, anhydrous 1417 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-15	Original source
Cerium (III) chloride, anhydrous 1417 SDS – ProChem, Inc.	ProChem, Inc.	02/24	2026-09-14	Original source
Cerium (III) fluoride 1419 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Cerium (III) fluoride 1418 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Cerium (IV) Ammonium Nitrate 1404 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-15	Original source
Cerium (IV) Ammonium Nitrate 1404-1 SDS – ProChem, Inc.	ProChem, Inc.	Not stated	2026-09-14	Original source
Cerium (IV) Ammonium Nitrate 1404 SDS – ProChem, Inc.	ProChem, Inc.	09/23	2026-09-14	Original source
Cerium (IV) Oxide SDS – CAS 1306-38-3 – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-15	Original source
Cerium (IV) Oxide 1424 SDS – CAS 1306-38-3 – ProChem, Inc.	ProChem, Inc.	02/23	2026-09-14	Original source
Cerium (IV) Sulfate Hydrate 1425-5 SDS – ProChem, Inc.	ProChem, Inc.	Not stated	2026-09-14	Original source
Cerium (IV) Sulfate Tetrahydrate 1426 SDS – ProChem, Inc.	ProChem, Inc.	02/15	2026-09-15	Original source
Cerium (IV) Sulfate Tetrahydrate 1426 SDS – ProChem, Inc.	ProChem, Inc.	03/22	2026-09-14	Original source
Cerium, chips 1399 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-15	Original source
Cerium, chips 1399 SDS – ProChem, Inc.	ProChem, Inc.	02/24	2026-09-14	Original source
Dysprosium (III) Bromide Anhydrous 1635 SDS – ProChem, Inc.	ProChem, Inc.	10/24	2026-09-14	Original source
Dysprosium (III) Chloride Hexahydrate 1640 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Dysprosium (III) Chloride Hexahydrate 1639 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Dysprosium (III) Chloride 1642 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Dysprosium (III) Nitrate, Pentahydrate 1652 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Dysprosium (III) Nitrate, Pentahydrate 1651 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Dysprosium (III) Oxalate Hydrate 1657 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Dysprosium (III) Sulfate Octahydrate 1669 SDS – ProChem, Inc.	ProChem, Inc.	02/15	2026-09-14	Original source
Dysprosium (III) bromide hydrate 1633 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Dysprosium (III) fluoride, anhydrous 1645 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Dysprosium (III) fluoride, anhydrous 1646 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Dysprosium Acetate Anhydrous 1621 SDS – ProChem, Inc.	ProChem, Inc.	02/26	2026-09-14	Original source
Dysprosium Acetate Tetrahydrate 1619 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Dysprosium Acetate Tetrahydrate 1618 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Dysprosium Chips 1612 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Dysprosium Powder 1615 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Dysprosium carbonate tetrahydrate 1636 SDS – ProChem, Inc.	ProChem, Inc.	02/14	2026-09-14	Original source
Dysprosium oxide 1660 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Dysprosium oxide 1663 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Dysprosium oxide 1664 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Erbium (III) Carbonate Hydrate 1690 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Erbium (III) Carbonate Hydrate 1692 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Erbium (III) Carbonate Hydrate 1691 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Erbium (III) Fluoride 1708 SDS – ProChem, Inc.	ProChem, Inc.	04/15	2026-09-14	Original source
Erbium (III) Fluoride 1705 SDS – ProChem, Inc.	ProChem, Inc.	04/15	2026-09-14	Original source
Erbium (III) Fluoride 1709 SDS – ProChem, Inc.	ProChem, Inc.	04/15	2026-09-14	Original source
Erbium (III) Nitrate Pentahydrate 1717 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Erbium (III) Oxalate Decahydrate 1726 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Erbium (III) Oxalate Hydrate 1723 SDS – ProChem, Inc.	ProChem, Inc.	02/15	2026-09-14	Original source
Erbium (III) Oxide 1732 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Erbium (III) Oxide 1729 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Erbium (III) Oxide 1728 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Erbium (III) acetate hydrate 1684 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Erbium (III) acetate hydrate 1683 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Erbium (III) bromide hydrate 1686 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Erbium (III) bromide hydrate 1687 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Erbium (III) chloride, anhydrous 1695 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Erbium (III) phosphate hydrate 1735 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Erbium (lll) Chloride Hydrate 1694 SDS – ProChem, Inc.	ProChem, Inc.	08/26	2026-09-14	Original source
Erbium (lll) Chloride Hydrate 1694-5 SDS – ProChem, Inc.	ProChem, Inc.	08/26	2026-09-14	Original source
Erbium Chips 1678 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Erbium Chloride hexahydrate 1696 SDS – ProChem, Inc.	ProChem, Inc.	08/26	2026-09-14	Original source
Erbium Chloride hexahydrate 1693 SDS – ProChem, Inc.	ProChem, Inc.	08/26	2026-09-14	Original source
Erbium Nitride SDS – ProChem, Inc.	ProChem, Inc.	06/15	2026-09-15	Original source
Erbium Powder 1681 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Erbium Sulfate, hydrate 1738 SDS – ProChem, Inc.	ProChem, Inc.	05/15	2026-09-14	Original source
Erbium Tungstate 1747 SDS – ProChem, Inc.	ProChem, Inc.	06/15	2026-09-14	Original source
Erbium chloride hexahydrate 1696 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-15	Original source
Erbium chloride hydrate 1693 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-15	Original source
Europium (III) 2,2,6,6-tetramethyl-3,5-heptanedionate 1795 SDS – ProChem, Inc.	ProChem, Inc.	Not stated	2026-09-14	Original source
Europium (III) Bromide Hydrate 1761 SDS – ProChem, Inc.	ProChem, Inc.	Not stated	2026-09-14	Original source
Europium (III) Bromide Hydrate 1762 SDS – ProChem, Inc.	ProChem, Inc.	06/15	2026-09-14	Original source
Europium (III) Nitrate Hexahydrate 1784 SDS – ProChem, Inc.	ProChem, Inc.	02/22	2026-09-14	Original source
Europium (III) Nitrate Hydrate 1783 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Europium (III) Nitrate Hydrate 1777 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Europium (III) Nitrate Hydrate 1780 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Europium (III) Oxalate Hydrate 1786 SDS – ProChem, Inc.	ProChem, Inc.	02/15	2026-09-14	Original source
Europium (III) Phosphate 1792 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Europium (III) Sulfate Octahydrate 1793 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Europium (III) acetate hydrate 1759 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Europium (III) acetate hydrate 1760 SDS – ProChem, Inc.	ProChem, Inc.	10/21	2026-09-14	Original source
Europium (III) acetate hydrate 1756 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Europium (III) chloride, Hexahydrate 1767 SDS – ProChem, Inc.	ProChem, Inc.	02/22	2026-09-14	Original source
Europium (III) chloride, anhydrous 1765 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Europium (III) chloride, hydrate 1768 SDS – ProChem, Inc.	ProChem, Inc.	03/14	2026-09-14	Original source
Europium (III) oxide 1790 SDS – ProChem, Inc.	ProChem, Inc.	05/14	2026-09-14	Original source
Europium (III) oxide 1788 SDS – ProChem, Inc.	ProChem, Inc.	05/14	2026-09-14	Original source
Europium (III) oxide 1789 SDS – ProChem, Inc.	ProChem, Inc.	05/14	2026-09-14	Original source
Europium Powder 1753 SDS – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Europium fluoride, anhydrous 1774 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Europium metal 1750 SDS – CAS 7440-53-1 – ProChem, Inc.	ProChem, Inc.	12/14	2026-09-14	Original source
Gadolinium (III) carbonate hydrate 1816 SDS – CAS 38245-36-2 – ProChem, Inc.	ProChem, Inc.	05/14	2026-09-15	Original source
Gadolinium Telluride 1846 SDS – ProChem, Inc.	ProChem, Inc.	07/14	2026-09-15	Original source
Holmium (III) 2,2,6,6-tetramethyl-3,5-heptanedionate 1994 SDS – ProChem, Inc.	ProChem, Inc.	Not stated	2026-09-14	Original source
Holmium (III) Acetylacetonate Hydrate 1971 SDS – ProChem, Inc.	ProChem, Inc.	Not stated	2026-09-14	Original source
Holmium (III) Bromide Hydrate 1973 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Holmium (III) Bromide Hydrate 1972 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Holmium (III) Nitrate, Pentahydrate 1988 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Holmium (III) Nitrate, Pentahydrate 1989 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Holmium (III) Nitrate, Pentahydrate 1987 SDS – ProChem, Inc.	ProChem, Inc.	01/15	2026-09-14	Original source
Holmium (III) acetate hydrate 1970 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Holmium (III) acetate hydrate 1969 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Holmium (III) chloride hexahydrate 1975 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Holmium (III) chloride hexahydrate 1978 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source
Holmium (III) chloride hexahydrate 1979 SDS – ProChem, Inc.	ProChem, Inc.	04/14	2026-09-14	Original source

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