Yixing Hongbo Fine Chemical Co.,Ltd.
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Methyl Cellulose (MC)

Name and Composition: Methyl Cellulose(MC)
Structure:
Specifications:
Item Index (55HB)
Methoxyl, % 28.0-32.0
Moisture, % ≤5
Viscosity(2%,20°C)mpa.s 5-100000 (See viscosity specifications)
Ash, % ≤5
Gelling temperature °C 52-67

Note:"55HB" denotes Hongbo brand MC,among which 55 refers to gelling temperature, HB is the acronym of Hongbo, the number at rear denotes viscosity, viscosity over 1000mpa.s is marked by M,for instance, 55HB4MS denotes viscosity is 4000mpa.s and MC has been treated on surface.

Viscosity Specifications:
Model
Range mpa.s
Model
Range mpa.s
HB-5 3-7 HB-4000 3500-5600
HB-10 8-12 HB-6000 5000-9000
HB-15 13-18 HB-10000 8000-12000
HB-25 20-30 HB-15000 13000-16500
HB-50 40-60 HB-20000 17000-22000
HB-100 80-120 HB-25000 22000-32800
HB-400 350-500 HB-40000 37000-42000
HB-1000 800-1200 HB-50000 2900-3900*
HB-1500 1200-1800 HB-60000 3100-4090*
HB-2000 1600-2400 HB-100000 4100以上
* : Viscosity of 1% water solution at 20°C,(mpa.s)
Property: 

MC is a kind of non-ion aqueous cellulous ether,white or white-similar powder or granule,no odor or taste,nontoxic,with a little hygroscopicity. Different substitution offers different solubility,usually medium substitution(DS between 1.5-2.0) comes under cool aqueous model,and finds widest applications.It dissolves in cool water and some organic solvents,does not dissolve in hot water.In hot water at 80-90°C it dissolves and swells,after cooled down,dissolving quick.Its solution possesses reversible hot gelling characteristic,stable to acid and alkali,is not effected between PH 2-12, with excellent anti-mildew ability,capable of dispersing, emulsifying, agglomerating, thickening, holding water,forming film etc.Film formed by its offers superior toughness flexibility, transparency and oil resistance.

Density:
1.39g/cm3
Apparent density:
0.25-0.7g/cm3
Carbonization temperature: 225-230°C Color-change
temperature:
190-200°C
Surface tension(25°C): 47-53dyn/cm
Usage:

The product is used as agents of thickening,coherence,water-holding,film-forming, shaping, dispersing, retard etc.In building construction, building material, coating, ceramics, textile printing & dyeing,leather,tobacco, ink,paper making,petrochemical,daily-use chemical etc.For example,putting MC in cement slurry may decrease water loss on the surface, even if used in dry wall it also can prevent wall cracking, improve its coherence and workability;used in cement product, MC makes it firm and hard but not shrink too much; used in emulsion or aqueous resin coating, MC gives coating a good wearability,fluidity,uniformity,stability for storage and endurance to heavy metal pigment dissolving.

In pharmaceutical and food industries MC is used as agent of coherence,film-forming, emulsification and suspension etc.

Method of Use:

1. Use after fast dissolving:

While kept stirring,MC may disperse,swell,dissolve until transparency.The following method may reach fast dissolving:

(1) Heat the required water to 80-90°C,put in MC slowly while stirring,when slurry is formed and cooled,continue to stir,it will dissolve fully.

(2) Heat half the water to 80-90°C,put it in while stirring until it becomes slurry,then add the residual cool water and stir it until transparency.

2. Prepare Gruel-like Mother liquor for Use:

First prepare MC into high thick gruel-like mother liquor(the same method as above), when used, supplement adequate cool water and continuously stir until transparency.

3. Dry-Blending:

MC owns excellent compatibility, so it can be easily mixed dry with cement, plaster powder, pigment etc.a good effect can be obtained.Especially,it has good mixing-ability with water-soluble substance such as washing powder,starch etc.so it can be directly be mixed.

Packing and Storage:

20kg or 15kg net weight in plastic-coated or paper-plastic compound bag lined with PE bag inside. On storage avoid sunshine and rain,prevent fire and wet.

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