Overview
Guanidine carbonate (CAS 593-85-1 ) is a stable salt form of guanidine used across chemical synthesis, personal care, and industrial processing. Its controlled alkalinity and reactivity make it a preferred source of guanidine.
This material is often selected in applications where the free base or hydrochloride form is less practical to handle. In personal care formulations, it functions as a pH adjuster and active ingredient in hair products.
It reacts with hair proteins to alter structure in straightening and relaxer products. Pharmaceutical and fine chemical manufacturers use it as a guanidylating agent and intermediate in the synthesis of active compounds.
These compounds include antidiabetic and antimicrobial agents. In polymer and resin production, it acts as a catalyst or curing agent precursor, particularly in epoxy and melamine-based systems for industrial use.
Food-grade applications include its use as a buffering agent in select formulations where alkaline pH control is required. The product is supplied as a white crystalline powder for various manufacturing needs.
It is available in technical and pharmaceutical grades, with purity levels typically ranging from 98% to 99%+. Quality standards may align with USP or FCC requirements depending on the specific application.
Packaging options span from small laboratory quantities to bulk industrial supply. Moisture-controlled packaging is standard given the product's sensitivity to humidity and environmental factors during storage.
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Physical Properties
| Melting Point | >300 °C(lit.) |
| Density | 1.25 |
| Appearance | white to almost white crystalline powder |
| Color | White to almost white |
| Odor | Faint odor |
| Form | Crystalline Powder |
| Water Solubility | 450 g/L (20 ºC) |
| Vapor Pressure | 0Pa at 25℃ |
| pH | 11.7 (110g/l, H2O, 20℃) |
| Log P | -1.63 at 20℃ |
Safety & Handling
Danger GHS05 GHS07 Hazard Statements H302 Harmful if swallowed H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H335 May cause respiratory irritation H412 Harmful to aquatic life with long lasting effects Precautionary Statements 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. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. 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. 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. 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 | 29252000 |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 593-85-1
- EC Number
- 209-813-7
- Mol. Weight
- 180.17
- HS Code
- 29252000
- Category
- Amines