(Pharmaceutical Grade)
Hydroxyethyl Cellulose
Chemical name: Hydroxyethyl Cellulose(HEC) ,methyl hydroxyethyl cellulose
Standard:Q/FRT006-2010
(Meet the requirements of USP, EP)
Specification
|
Items |
Value |
|
Molar substitution(MS) |
1.8-2.5 |
|
Moisture(%) |
≤6 |
|
Non-soluble substance(%) |
≤0.5 |
|
PH |
6.0-8.5 |
|
Transmittance(2% by weight) |
≤80 |
|
Ash(%) |
≤6 |
|
Viscosity(mPa.s)20% aqueous solution at 20 ℃ |
50-60000 |
Preparation of HEC solution
Add the necessary clean water to vessel.
But HEC to the water while stirring slowly, until all material completely wet.
Add other compositions after HEC totally dissolves.
Surface-treated HEC should be distributed in water, and modified PH value to 8-10 by alkali or NH4OH after all materials completely wet.
Properties
The product is a white or light yellow powder with odourless and tasteless, 99% passes through 40 mesh seieve.
- Softening temperature: 130-140℃
- Bulk density :0.35-0.61g/ml
- Decomposing temperature: 205-210℃. The burn velocity is slow
- Equilibrium moisture content(at23℃): 6% at 50% RH, and 29% at 84% RH.
It dissolves in both cold and very small when PH value is around 2-12, but it reduces when PH value exceeds this range. The surface-treated HEC can dissolve only when PH value is modified to basicity.
Usage
Reaction auxiliary agent
HEC is used in the polymerization of viny acetate. In order to improve the emulsion stability in broad PH value range. It also makes additives for many other suspended polymerization.
Petroleum well drilling
In many kinds of mud needed in petroleum well drilling, as a thickening agent. HEC makes mud have excellent flow ability and stability. In well drilling, it can raise the carring ability of mud, and inhibits a lot of water to inter oil layer.
Building construction and materials
HEC is an effective thickening agent and binder because of its good water conserving, put it into mud in order improve the mud's flow ability, to put off water evaporating time, raise the initial intensity of concrete and avoid crcak .
Tooth paste
HEC can keep the stability of tooth paste because of its high anti-salt and anti-acid capability. In addition, it makes tooth paste hardly dry.
Package,storage,transportation
It is packed in fiber drum and lining with polyethylene film bag. Net weight 15kg. Moisture must be avoided.
FAQ
Q: What types of packaging do you provide? (Drums, cans, bags, IBC containers, etc.)
A: Fiber drum,iron drum,carton box,bags
Q: Are your packaging materials compliant with international and hazardous goods shipping standards?
A: Yes
Q: What precautions should be taken during transportation and storage of your chemicals?
A: Packing with pallets,and handing with forklift.
Q: What is the minimum order quantity (MOQ)? Can different products be mixed in one shipment?
A: MOQ:25KG,can mix in one shipment.
Q: Do you provide a quality guarantee for your products? What is your quality control process?
A: Sure provide quality guarantee, quality according to ISO. Or GMP.
Q: Can you provide third-party inspection or factory test reports?
A: Yes,can provide
Q: Do your chemicals have hazardous material certification or registration?
A: yes
Q: Are your products compliant with environmental and safety regulations, such as REACH or RoHS?
A: Some compliant with REACH and RoHS.
Hot Tags: methyl hydroxyethyl cellulose, China methyl hydroxyethyl cellulose manufacturers, suppliers, factory
