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Stannous Chloride Dihydrate (Tin(II) Chloride)

CAS 10025-69-1 · Formula Cl2H2OSn · MW 207.63 g/mol

A strong tin(II) reducing agent and mordant for plating, dyeing, and chemical-processing operations. It is used as a reducing agent, a mordant in textile dyeing, a tin-plating and electroplating agent, and in the manufacture of dyes, pigments, and sensitized paper; it is also recognized as a food antioxidant and color-retention agent.

Part of Acids & Salts
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UN Number
UN 3260
Hazard Class
Class 8
HS Code
2827.39
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Preservation · Synthesis Intermediate
Applications & Use Cases
  • Reducing agent: Provides tin(II) reducing power in chemical synthesis and processing.
  • Mordant: Fixes dyes in textile dyeing and printing operations.
  • Plating agent: Used in tin plating, electroplating, and metal-surface treatment.
  • Dye and pigment manufacture: Serves as an intermediate in colorant and sensitized-paper production.
Physical Properties
Melting Point
38 °C
Density
2.71 g/cm³
Solubility
Solubility in water, g/100ml at 20 °C: >100 (very good)
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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DOT / UN Transport Classification
DOT hazard class 8 placard
UN / DOT NumberUN 3260
Hazard Class / DivisionClass 8
Proper Shipping NameCorrosive solid, acidic, inorganic, n.o.s

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2827 . 39
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.27
Internationally harmonized (WCO HS)
Subheading 2827.39
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
10025-69-1
Molecular Formula
Cl2H2OSn
Molecular Weight
207.63 g/mol
IUPAC Name
dichlorotin;hydrate
PubChem CID
InChI Key
LWJYMKDMGMOTSB-UHFFFAOYSA-L
Synonyms & Trade Names
Tin dichloride dihydrate tin(II) chloride hydrate tin dichloride hydrate dichlorotin;hydrate SnCl2 H2O SnCl2.H2O tin(II)chloride hydrate tin(II)chloride-hydrate tin (II) chloride hydrate tin(II)chloride monohydrate tin(II) chloride monohydrate tin (II) chloride monohydrate
Full Description

Stannous chloride dihydrate (tin(II) chloride dihydrate, CAS 10025-69-1) is an inorganic tin salt and a powerful reducing agent. It is used as a reducing agent, a mordant in textile dyeing, a tin-plating and electroplating agent, and in the manufacture of dyes, pigments, and sensitized paper; it is also recognized as a food antioxidant and color-retention agent.

Frequently Asked Questions

What is the use of stannous chloride dihydrate?

Stannous chloride dihydrate (tin(II) chloride dihydrate, CAS 10025-69-1) is a powerful reducing agent. It is used as a reducing agent in synthesis, a mordant in textile dyeing and printing, a tin-plating and electroplating agent, and an intermediate in the manufacture of dyes, pigments, and sensitized paper.

How is stannous chloride dihydrate made?

Tin(II) chloride is typically produced by reacting metallic tin with hydrochloric acid; crystallizing the product from aqueous solution yields the dihydrate (SnCl2·2H2O). RawSource supplies finished ACS-grade material; refer to the CoA for assay against ACS specifications rather than preparing it in-house.

What is the formula and molecular weight of stannous chloride dihydrate?

The formula is SnCl2·2H2O (written Cl2H2OSn) with a molecular weight of approximately 225.65 g/mol. CAS is 10025-69-1. ACS grade indicates the material meets American Chemical Society reagent specifications, documented on the CoA.

How does stannous chloride dihydrate ship under DOT?

It is assigned UN 3260 (corrosive solid, acidic, inorganic, n.o.s.). RawSource ships it with the required hazard documentation and packaging; consult the SDS for the full transport classification, packing group, and labeling before booking freight.

How is bulk stannous chloride dihydrate packaged?

RawSource supplies ACS-grade stannous chloride dihydrate as a powder/crystalline solid in drums and other industrial packaging for manufacturers. MOQ and lead time depend on grade and volume. Request a bulk quote; CoA and SDS accompany each lot.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.