What is Povidone-Iodine CAS 25655-41-8?

Povidone-Iodine, also called PVP-I or iodinated povidone, is a complex of polyvinylpyrrolidone and iodine identified by CAS 25655-41-8, not a discrete molecule with a single molecular formula. It is normally a reddish-brown, water- and ethanol-soluble powder used as an iodophor raw material in antiseptic and disinfectant formulations.

What is the difference between available iodine and total iodine in PVP-I?

Available iodine is the active antimicrobial iodine released from the povidone complex and is commonly specified as about 9.0-12.0% for powder grades. Total iodine includes bound and iodide forms, so it is not interchangeable with available iodine. Confirm the pharmacopoeia, edition and assay basis before comparing offers.

Which specifications matter for Povidone-Iodine?

Confirm appearance, available iodine, iodide ion, loss on drying, nitrogen, residue on ignition, heavy metals or arsenic, and pH for the specified solution strength. Pharmacopeial grades such as USP or EP can differ slightly, so request the current specification and identify the destination regulatory standard.

What are common uses of Povidone-Iodine?

PVP-I is used as an iodophor active ingredient in skin and instrument antiseptics, oral-care products, veterinary or animal-health preparations, and disinfection applications in food and feed facilities. It is a raw material rather than a finished 10% antiseptic solution, so formulation type and regulatory approval path should be defined.

How should Povidone-Iodine be stored, packed and handled?

Store PVP-I in tightly closed, light- and moisture-protective containers in a cool, dry, ventilated area. Avoid excessive heat, incompatible reducing agents and contamination; confirm packaging size, retest period and traceability, and follow the applicable safety information for PPE, ventilation, spill control and occupational hygiene.

Povidone-Iodine (PVP-I) CAS 25655-41-8

Povidone-Iodine (PVP-I) is a povidone-polymer iodine complex identified by CAS 25655-41-8. It is not a discrete molecule; available-iodine content, form, and intended-use suitability must be confirmed by current product-specific documentation. For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

CAS: 25655-41-8
Synonyms: Povidone-Iodine; PVP-I; Polyvinylpyrrolidone-Iodine Complex; Iodinated Povidone
Molecular Formula: PVP-I complex (not a discrete molecular formula)
Grade: Confirm the current product-specific specification.
Package: Confirm packaging requirements for the proposed material and destination.

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Product Description

Composition: PVP-I polymer-iodine complex; not a discrete molecular formula.

CAS Number: 25655-41-8.

Physical-property requirements must be confirmed against the current product-specific specification and applicable SDS.

Use scope

PVP-I may be evaluated as an iodophor raw material for a defined formulation. It is not a finished medical or consumer product, and regulatory suitability, available iodine, and formulation requirements must be confirmed separately.

For applications involving animal, agricultural, or medical claims, obtain product-specific regulatory and technical confirmation before evaluation.

FAQ - Technical & Supply Chain

Q:
What is Povidone-Iodine CAS 25655-41-8?

A: Povidone-Iodine, also called PVP-I or iodinated povidone, is a complex of polyvinylpyrrolidone and iodine identified by CAS 25655-41-8, not a discrete molecule with a single molecular formula. It is normally a reddish-brown, water- and ethanol-soluble powder used as an iodophor raw material in antiseptic and disinfectant formulations.
Q:
What is the difference between available iodine and total iodine in PVP-I?

A: Available iodine is the active antimicrobial iodine released from the povidone complex and is commonly specified as about 9.0-12.0% for powder grades. Total iodine includes bound and iodide forms, so it is not interchangeable with available iodine. Confirm the pharmacopoeia, edition and assay basis before comparing offers.
Q:
Which specifications matter for Povidone-Iodine?

A: Confirm appearance, available iodine, iodide ion, loss on drying, nitrogen, residue on ignition, heavy metals or arsenic, and pH for the specified solution strength. Pharmacopeial grades such as USP or EP can differ slightly, so request the current specification and identify the destination regulatory standard.
Q:
What are common uses of Povidone-Iodine?

A: PVP-I is used as an iodophor active ingredient in skin and instrument antiseptics, oral-care products, veterinary or animal-health preparations, and disinfection applications in food and feed facilities. It is a raw material rather than a finished 10% antiseptic solution, so formulation type and regulatory approval path should be defined.
Q:
How should Povidone-Iodine be stored, packed and handled?

A: Store PVP-I in tightly closed, light- and moisture-protective containers in a cool, dry, ventilated area. Avoid excessive heat, incompatible reducing agents and contamination; confirm packaging size, retest period and traceability, and follow the applicable safety information for PPE, ventilation, spill control and occupational hygiene.

Ordering & Documentation

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COA, TDS, SDS/MSDS and packing details are available on request.

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