Olidifying Agent for Water Glass
Property:
Colorless or light yellow, transparent liquid, slightly soluble in water, freely soluble in alcohol, ether and other organic solvent.
Molecular Formula:(CH3CO)·O(CH2)2O·NO·(OCCH3)
Boiling Range:(101.3kPa)180-300ºC,
It has the common chemical characteristics of ester, freely hydrolyzed into alcohol and acetic acid at the existence of caustic soda and inorganic acid.
Quality Index Q/320282NPL:
Items
Industrial Grades
Ester Content%
≥ 98%
Free Acid%
≤0.5
Appearance
Colorless or slight yellow
Moisture Content %
≤0.2
Uses and Characteristics:
It is YS-series and jointly developed with Shanghai Reagent General Company in 1994. Applicable to casting manufacturer with three varieties. It has good self-hardening property without toxicity and harm. It has been proved that this product has the advantages of good casting size accuracy, low residue of processing, good diffusibility, low gas-emitting volume, low manufacture consumption etc.
Solidifying Mechanism:
The solidification of this product is realized through the mixing of organic ester and water glass. The sand-type, pressure-resistant strength of ester-solidified water glass is 1.5-3 Mpa.
Product Types and Technical Indexes:
Type
Solidifying Speed
Applicable Temperature ºC
General Ratio
MDT800
Very Slow
35
Raw Sand %;Water Glass 2.4-4.0%,Solidifying Agent 0.25-0.4%, Modulus of Water Glass 2.2-2.5
MDT901
Moderate Speed
25
MDT903
Quick
5
The Regulation of Solidifying Speed:
Solidifying Speed
Quickest
Very Quick
Quick
A Little Quicker Than Moderate Speed
Moderate Speed
A Little Slower Than Moderate Speed
Slow
Very Slow
Applicable Temperature ºC
0
5
10
15
20
25
30
35
800
-
-
-
-
-
-
80%
40%
901
30%
50%
80%
100%
80%
60%
903
90%
100%
70%
50%
20%
-
-
-
K
10%
 
 
 
 
 
 
 
Transportation and Storage:
This product is easily hydrolyzed. It should be hermetically sealed and avoid water. Fire should be insulated from this product in transportation and storage. It should be stored at cool, dry places, avoiding heat, moisture, direct sunlight and rain.
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