96949-22-3
- Product Name：Welan gum
- Molecular Formula：
- Purity：99%
- Molecular Weight：0
Product Details;
CasNo： 96949-22-3
Quality Manufacturer Supply Top Purity Welan gum 96949-22-3 Cheapest Price
Welan Gum is an anionic polysaccharide with excellent thermal stability and retention of viscosity at elevated temperatures. Welan Gum exhibits superior temperature stability over 200° F in fresh water and low pH fluids. Welan Gum is a tan colored dry powder with a density of 26.25 lbs/ft³. Welan Gum is used in various industries where high molecular weight biopolymers are useful.
Physical requirements:
| Appearance: | white to cream color powder | |
| Odor | mild | |
| pH: | 7.0-9.0 | |
| Bulk density: | 26.25 lbs./ ft3 (500-700kg/m3) | |
| Specific Gravity: | 1.45 | |
| Particle Size: | 90% pass 80 mesh | |
| Viscosity |
0.66% in Dl water by Fann 35 at 70ºF |
0.66% in Dl water by Fann 35 with 1.0 spring at 185ºF |
| 300rpm | 39-49 | 37-47 |
| 200rpm | 33-43 | 32-42 |
| 100rpm | 29-37 | 28-35 |
| 6rpm | > 17 | > 17 |
| 3rpm | > 16 | > 16 |
Warm wheel glue has the following characteristics:
Higher viscosity at low concentrations
Higher viscosity at low speed
Excellent water holding capacity
Special stability under high salt conditions
high temperature resistance
Excellent rheological properties
| Items | Specification |
| Appearance | Off white powder |
| Viscosity (1% H2O,, 25℃) mpa.s | 1500-3500 |
| Loss on drying % | 6.0-16.0 |
| Ash % | ≤13 |
| Packaging | 1kg-15kg packing | 2 PE bag inside + 1 foil bag outside in carton | ||
| 25kg-50kg packing | 2 PE bag inside + 1 foil bag outside in drum | |||
| Other packing | Customized packing | |||
| Drum Size | D38cm*H60cm or customized, 25 kg/ drum | |||
| Shipping | 1-50kg | International Express | Fast and convenient | Door to Door |
| 50-500kg | Air Transportation | Fast and cheap | To Air Port | |
| Above 500kg | Sea Transportation | Cheap and convenient | To Port | |
Welan gum(Cas 96949-22-3) Usage
|
Description |
Welan gum represents a versatile biopolymer with multifaceted applications across diverse industrial sectors, particularly in oil and gas exploration, construction, and manufacturing processes. Its unique rheological properties and temperature stability make it an invaluable additive for enhancing the performance and functionality of numerous industrial formulations. |
|
Uses |
Oil and Gas Industry: Welan gum serves as a versatile fluid loss additive (viscosifier) in drilling muds, helping mitigate loss circulation and maintain suspension stability. It is also utilized as a set retarder in cementing systems, enhancing the performance and reliability of oil and gas well operations. Hydraulic Fracturing: In hydraulic fracturing fluids, welan gum contributes to viscosity control and suspension stability, facilitating the efficient extraction of hydrocarbons from underground reservoirs. Cement Manufacturing: Welan gum is employed as a cement or concrete viscosifier, enhancing the workability and performance of cementing grouts. It aids in preventing fluid loss and maintaining the integrity of cement slurries during construction and wellbore completion. |
96949-22-3 Relevant articles
Rheological properties of grouts with viscosity modifying agents as diutan gum and welan gum incorporating pulverised fly ash
Mohammed Sonebi
, Cement and Concrete Research Volume 36, Issue 9, September 2006, Pages 1609-1618
Similar mixes made with welan gum were compared to those containing diutan gums. The effect of admixtures on fluidity and rheological parameters are discussed in this paper. The effect of the replacement of cement by pulverised fly ash (PFA) was also investigated. Grouts with replacements of PFA of 5, 13 and 20% by mass were used with the same W/B. Similar control grouts and mixes incorporated different dosages of PFA made with welan gum were made in order to compare the fluidity and the rheological parameters to the previous grouts made with diutan gum.
Rheological Properties of Welan Gum in Aqueous Media
Masakuni Tako, Masahiro Kiriaki
, Agricultural and Biological Chemistry, Volume 54, Issue 12, 1 December 1990, Pages 3079–3084
The flow behavior and dynamic viscoelasticity of welan gum solutions were measured with a rheogoniometer. The welan gum showed shear-thinning behavior at a concentration of 0.1%, but plastic behavior above 0.3% at 25°C. The dynamic viscoelasticity increased with increasing concentration, and was scarcely changeable with increasing temperature even at 80°C.
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