Overview
Iodine (CAS 7553-56-2 ), also known as molecular iodine, is a halogen element supplied in solid form for industrial and pharmaceutical use. It functions primarily as a biocide and chemical intermediate.
This material acts as a disinfectant across a broad range of manufacturing and treatment processes. In water treatment, it is used as an active disinfectant to eliminate bacteria, viruses, and protozoa.
It is essential for potable water systems and emergency purification applications. Pharmaceutical manufacturers use it as a key starting material for producing iodine-based antiseptics and contrast media.
It is also utilized for thyroid-related active ingredients. In personal care formulations, it contributes antimicrobial activity to topical antiseptic products including wound care solutions and surgical scrubs.
The substance also serves as a reagent and oxidizing agent in specialty chemical synthesis and analytical laboratory processes. It is supplied as dark grey-black crystalline flakes or granules.
These granules feature a characteristic metallic luster. Standard commercial grades include USP , BP , and Ph. Eur. for pharmaceutical and healthcare applications, alongside technical grade for industrial use.
Resublimed iodine is a recognized high-purity specification commonly required in pharmaceutical and analytical applications. This ensures the highest level of performance for sensitive chemical reactions.
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Physical Properties
| Melting Point | 113.7 °C |
| Boiling Point | 184.4 °C @ Press: 800 Torr |
| Density | 4.9 g/cm³ |
| Flash Point | <10°C |
| Appearance | Grey to purple solid |
| Color | Red-brown |
| Odor | Sharp, characteristic odor |
| Form | particles (round) |
| Water Solubility | 0.3 g/L (20 ºC) |
| Vapor Pressure | 0.31 mm Hg ( 25 °C) |
| pH | 5.4 (H2O)(saturated solution) |
| Log P | 2.49 at 20℃ |
Safety & Handling
Warning GHS07 GHS09 GHS08 GHS06 Hazard Statements H302 Harmful if swallowed H312 Harmful in contact with skin H315 Causes skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H330 Fatal if inhaled H332 Harmful if inhaled H335 May cause respiratory irritation H372 Causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H302+H312+H332 Harmful if swallowed, in contact with skin or if inhaled Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 In case of inadequate ventilation wear respiratory protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P320 Specific treatment is urgent (see … on this label). P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 28012000 |
| UN Number | 2056 |
| ADR Class | 3 |
| Packing Group | II |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 2 |
Other Names
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Chemical Properties
- CAS Number
- 7553-56-2
- EC Number
- 231-442-4
- Mol. Weight
- 253.8089
- HS Code
- 28012000
- Category
- Pigments & Colorants