Product Details
Guar gum is a naturally‑sourced plant gum extracted from carob tree pods or guar beans. The carob tree, a perennial shrub, mainly grows along Mediterranean coastal areas. By contrast, guar beans are annual leguminous crops largely planted in arid territories including India, Pakistan and Texas of the United States, benefiting from substantial diurnal temperature differences and sufficient precipitation. At present, the guar gum supplied on Chemicalbook is mostly sourced from guar beans.
During production, mature guar beans go through hulling treatment and are then transferred to milling workshops. Thermochemical processing divides raw materials into endosperm flakes, germ fractions and husk fractions. Germ portions high in protein are generally recycled as animal feed, whereas endosperm flakes undergo further grinding procedures to yield finished guar gum.
Parameters
| Melting point | >220°C (dec.) |
| alpha | D25 +53° (1N NaOH) |
| density | 0.8-1.0 g/cm3 |
| refractive index | 1.34 |
| FEMA | 2537 | GUAR GUM (CYAMOPSIS TETRAGONOLOBUS (L.)) |
| storage temp. | Hygroscopic, -20°C Freezer, Under inert atmosphere |
| solubility | It yields a mucilage of variable viscosity when dissolved in water, practically insoluble in ethanol (96 per cent). |
| form | Free Flowing Powder |
| color | Yellow-white |
| Odor | Odorless |
| PH | 5.0-7.0 (25°C1% in water) |
| Merck | 13,4588 / 13,4587 |
| Stability: | Stable. Combustible. A mixture of air and finely-divided powder is potentially explosive. Incompatible with strong oxidizing agents. |
| EPA Substance Registry System | Guar gum (9000-30-0) |
Safety Information
| WGK Germany | 1 |
| RTECS | MG0185000 |
| HS Code | 1302.39.0090 |
| Hazardous Substances Data | 9000-30-0(Hazardous Substances Data) |
| Toxicity | LD50 in male, female rats (g/kg): 7.35, 6.77 orally (Graham) |
