Overview
Glutaraldehyde (CAS 111-30-8 ), also known as glutaric dialdehyde and commercially supplied as GA 50%, is a reactive dialdehyde used across industrial and life science sectors as a biocide and fixative.
Its dual aldehyde groups allow it to form stable bonds with proteins and other biological substrates, making it effective for preservation, sterilization, and material hardening applications in various fields.
In water treatment, it controls microbial growth in cooling towers, oilfield injection systems, and industrial process water where oxidizing biocides are unsuitable for the specific operating environment.
Leather and textile processors use it to cross-link collagen fibers during tanning and to improve wet strength and dimensional stability in treated materials during the manufacturing process.
In biotechnology and life sciences, it functions as a tissue fixative and enzyme immobilization agent, supporting histology, diagnostic kit manufacturing, and specialized biosensor production.
Personal care formulators apply it at low concentrations as a preservative booster in rinse-off products where broad-spectrum antimicrobial performance is required for product safety and shelf life.
This chemical is most commonly supplied as a 50% aqueous solution, with 25% and lower-concentration grades available for applications requiring diluted handling and specific safety protocols.
Technical and biocide-grade specifications are standard across the market, with purity and concentration verified by titration or GC methods. Packaging ranges from drums to IBC totes for volume.
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Physical Properties
| Melting Point | -14 °C |
| Boiling Point | 188 °C |
| Density | 0.72 g/cm³ |
| Flash Point | 100°C |
| Appearance | Glutaraldehyde is a colorless liquid with a pungent odor, which readily changes to a glossy polymer. The Odor Threshold is 0.04 ppm (NY) and 0.2 ppm (NJ). |
| Color | Clear to slight haze |
| Odor | pungent aldehyde odor |
| Form | Solution |
| Water Solubility | miscible |
| Vapor Pressure | 15 mmHg ( 20 °C) |
| Refractive Index | n 20/D 1.450 |
| pH | >3.0 (H2O, 20°C) |
| Log P | -0.180 (est) |
Safety & Handling
Danger GHS05 GHS06 GHS08 GHS09 GHS07 Hazard Statements H227 Combustible liquid H301 Toxic if swallowed H302 Harmful if swallowed H311 Toxic in contact with skin H312 Harmful in contact with skin H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H318 Causes serious eye damage H330 Fatal if inhaled H331 Toxic if inhaled H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H335 May cause respiratory irritation H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H401 Toxic to aquatic life H411 Toxic to aquatic life with long lasting effects H412 Harmful to aquatic life with long lasting effects Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 Keep container tightly closed. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. 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. P363 Wash contaminated clothing before reuse. P391 Collect spillage. P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. 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. P308+P316 Get emergency medical help immediately. P333+P317 Get emergency medical help. P342+P316 Get emergency medical help immediately. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P354+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 | 29121990 |
| UN Number | 2922 |
| ADR Class | 8 |
| Packing Group | II |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 3 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 111-30-8
- EC Number
- 203-856-5
- Mol. Weight
- 100.12
- HS Code
- 29121990
- Category
- Catalysts & Catalyst Precursors