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Carbomer 941 / 971
CARBOMER range are synthetic high molecular weight
crosslinked polymers of acrylic acid, which confirm to USP./INF.
specifications as "CARBOMER"
Use
CARBOMER range, are water soluble polymer use to
:
 |
| Thicken |
To produce wide range
of viscosities and flow properties. |
| Suspend |
Insoluble
ingredients. |
| Stabilize &
Emulsify |
Emulsions |
|
|
Grade & Applications
|
| Grades |
Solvent used in
process |
Carbomer 934P / 974P
(Benzene free) |
Benzene
Cyclohexane & ethyl acetate |
|
|
- Gives permanent emulsion & Suspension at low viscosities
- In ionic systems performance is better.
- More effective in hydrogen bonding mechanisms.
- Emulsion stabilizer.
Advantages
|
| Thickning efficiency |
High viscosities at
low concentrations. |
| Uniform performance |
Reproducibility
unattainable with natural gums. |
| Safety |
Years of successful
use of carbomers. |
| Temperature
stability |
Extended up to 750C
heating or cooling |
| Unaffected by aging |
Excellent self life. |
| Microbial resistance |
Resists bacterial
attack and does not support mold growth |
| Versatility |
Although primarily
used in aqueous systems with neutralization. It can also be used in
solvent systems, with or without neutralization. |
| Elegance |
Smooth and luxurious
feeling. |
|
|
Chilling Properties
On refrigeration CARBOMER gel can retaining the cool
temperature level for 48 hours to 72 hours. Low temperature necessary for
vaccines, toxoids, insulin and human albumin can be store in
pre-refrigerated CARBOMER gel, making it as a suitable medium for
transporting these medicines.
Specifications
|
| Appearance |
White fine free
flowing powder. |
| Odour |
Mild acidic. |
| pH of 1% solution |
2.5 to 3 |
| Carboxylic content |
56% to 68% |
| Heavy metals |
Max. 2 ppm |
| Temperature
stability |
Up to 75°C |
|
|
Grades
|
| Grades |
Viscosity (20°C,
0.5% Neutralization) |
| Carbomer 934P / 974P |
4,000 - 11,000 cps. |
|
|
Preparation of Aqueous Transparent Gel
|
| D.M. water |
97.0 gm. |
| Carbomer (Any Grade) |
0.5 gm. |
Sodium Hyroxide
(10% solution) |
2.5 gm. |
|
|
Neutralizers Recommended
|
| Sodium Hydroxide |
Potassium Hydroxide |
| Triethanol Amine |
Triethyl amine, other
alkalies etc.. |
|
|
Toxicity
CARBOMER is a high molecular weight polymer. It is
not absorbed by body tissues and is totally safe for human oral consumption.
Test for toxicological tolerance show that it does not have pronounced
physiological action and is non toxic.
Storage
Store in cool dry place. Keep away from moisture and
water
Packing
5 kg., 20 kg., net in corrugated box.
