Molekula
Iodine flakes
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Iodine flakes are a non-metallic, crystalline form of elemental iodine (I₂) used primarily as a disinfectant, antiseptic, and reagent in laboratories, pharmaceuticals, and water treatment. It is also applied in analytical chemistry, dye production, and as a catalyst in organic synthesis. This product has a CAS number of 7553-56-2, a molecular weight of 253.81 g/mol, and requires storage at ambient conditions. It carries a Danger signal word because it causes damage to organs through prolonged or repeated exposure (H372); it is also harmful if swallowed, in contact with skin or if inhaled, causes skin and serious eye irritation, and is very toxic to aquatic life. Molekula supplies iodine flakes from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
25 g — $67.60 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark brown prills |
| Solubility | Complies |
| Assay | Not less than 99.7% and not more than 100.5% OF IODINE |
| Non-Volatile Matter | ≤0.05% |
| Sulphates (SO4)(2-) | Not included in BP986 Monograph (0.02% MAX) |
| Identification A and B | Complies |
| Chloride and Bromide | ≤250ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 (6.1) |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Bluish-black, lustrous solid |
| Odour | Sharp characteristic odor. |
| Melting Point | 113.7 °C |
| Boiling Point | 184.4 °C |
| Density | 4.9 (relative, water = 1) |
| Vapour Pressure | 0.04 kPa at 25 °C |
| log P (octanol/water) | 2.49 |
Source: PubChem CID 807 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 89967958 |
| CAS Number | 7553-56-2 |
| IUPAC Name | molecular iodine |
| EC Number | 231-442-4 |
| Molecular Formula | I2 |
| Molecular Weight | 253.81 |
| Exact Mass | 253.809 |
| SMILES | II |
| InChIKey | PNDPGZBMCMUPRI-UHFFFAOYSA-N |
| InChI | InChI=1S/I2/c1-2 |
| PubChem CID | 807 |
| UN Number | UN3495 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28012000 |
| Tariff Code | 2801200000 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H372 Causes damage to organs through prolonged or repeated exposure
- H400 Very toxic to aquatic life
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Diiodine
- Eranol
- Iode
- iodine
- Iodine crystals
- Iodine sublimed
- Iodio
- Molecular iodine
- Tincture iodine
- Vistarin
Frequently asked questions
What are iodine flakes commonly used for?
Iodine flakes are primarily used in water purification, disinfection, pharmaceuticals (e.g., antiseptics), and as a reagent in chemical synthesis, including organic iodination reactions.
What is the molecular formula and molecular weight of iodine flakes?
The molecular formula is I₂, and the molecular weight is 253.81 g/mol.
How should iodine flakes be stored?
Store iodine flakes in a cool, dry place at ambient temperature, away from moisture, sunlight, and incompatible substances like metals or reducing agents.
What grades of iodine flakes does Molekula supply?
Molekula supplies ACS reagent grade and technical grade iodine flakes, depending on purity and application requirements.
Can Molekula supply iodine flakes in bulk quantities?
Yes, Molekula can supply iodine flakes in bulk, with quantities ranging from kilograms to metric tons—contact us for custom packaging and pricing.
What documentation comes with an order of iodine flakes?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and a packing list for traceability and compliance.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.