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Carboxymethyl cellulose

Cas:
9004-32-4
Molecular Structure:
MDL:
MFCD00081472
Molecular Formula:
(C6+2yH7+x+2yO2+x+3yNay)n
Molecular Weight:
Alias:
羧甲基纤维素钠,羧甲基醚纤维素钠盐 Carboxymethylcellulose sodium salt Carboxymethyl cellulose, sodium salt Sodium carboxymethyl cellulose Sodium Tylose Tylose Sodium Sodium Cellulose Glycolate
Product order:
Name Specifications Packing Price Delivery
Carboxymethyl cellulose 500g(原装) RMB 2230.8 Consulting service
Carboxymethyl cellulose M.W. 700000 (DS=0.9) ,2500 - 4500mPa.s 100g RMB 209 Consulting service
Carboxymethyl cellulose M.W. 250000 (DS=1.2) ,1500-3100mPa.s 100g RMB 209 Consulting service
Carboxymethyl cellulose M.W. 250000 (DS=0.9) ,1500-3100mPa.s 100g RMB 198 Consulting service
Carboxymethyl cellulose M.W. 250000 (DS=0.7) ,1500-3100mPa.s 100g RMB 198 Consulting service
Carboxymethyl cellulose M.W. 90000 (DS=0.7) ,50-100mPa.s 100g RMB 176 Consulting service
Carboxymethyl cellulose M.W. 700000 (DS=0.9) ,2500 - 4500mPa.s 500g RMB 759 Consulting service
Carboxymethyl cellulose M.W. 250000 (DS=1.2) ,1500-3100mPa.s 500g RMB 759 Consulting service
Carboxymethyl cellulose M.W. 250000 (DS=0.9) ,1500-3100mPa.s 500g RMB 737 Consulting service
Carboxymethyl cellulose M.W. 250000 (DS=0.7),1500-3100mPa.s 500g RMB 759 Consulting service
Carboxymethyl cellulose M.W. 90000 (DS=0.7) , 50-100mPa.s 500g RMB 759 Consulting service
Carboxymethyl cellulose 粘度: 300-800mpa.s,USP级 500g RMB 66 Consulting service
Carboxymethyl cellulose 粘度: 800-1200mpa.s ,USP级 500g RMB 99 Consulting service
Carboxymethyl cellulose 粘度:≥1200mpa.s,USP级 500g RMB 66 Consulting service
Carboxymethyl cellulose 粘度: 600-1000mpa.s,USP级 500g RMB 66 Consulting service
Character:
白色或淡黄色粉末。具有湿润性,可溶于水,在中性或微碱性时为高粘度液体。对化学药品、热、光稳定。无臭、无味。CMC是纤维素经羧甲基化而制得的聚合物,纯的羧甲基纤维素无实用价值,实际使用的是其钠盐。
熔点:300 °C 
Quality Standard:
项目                         I型        II型        III型     IV型     V型
平均分子量M.W                700000     250000      250000    250000   90000  
外观Appearance               白色至浅灰色结晶粉末   白色至灰色结晶     白色至浅黄色颗粒粉末
含量Assay other ,%           >99.5     >99.5        >99.5     >99.5   >99.5
干燥损失Loss on drying,%     <10       <10           <10      <10     <10
                              (3-5 g, 105°C, 2 小时)
重金属Heavy metals            <20 ppm   <20 ppm      <10 ppm   <10 ppm  <20 ppm
pH(1% 溶液.)                  6.5-8     6.5-8        6.5-8     6.5-8    6.5-8
                              (1% 溶液.)
粘度Viscosity, mPa.s      2500 - 4500  1500-3100   1500-3100 1500-3100  50-100
                             (Brookfield, 1%溶液., 25°C)
砷As measure                  < 3 ppm    < 3 ppm      < 3 ppm  < 3 ppm   < 3 ppm
铅 Pb measure                 < 10 ppm   < 10 ppm     < 3 ppm  < 3 ppm   < 10 ppm
汞Hg measure                  < 1 ppm    -            < 1 ppm  < 1 ppm  < 1 ppm
镉Cd measure                  < 1 ppm    -            < 1 ppm  < 1 ppm  < 1 ppm
乙醇酸钠sodium glycolate,%   < 0.4      -            < 0.4    < 0.4    < 0.4
氯化钠sodium chloride,%      < 0.25     -            < 0.25   < 0.25   < 0.25
取代度degree of substitution: 0.80-0.95 1.15-1.45  0.80-0.95  0.65-0.90 0.65-0.90


USP级                I型        II型       III型
钠含量             6.5-9.5     6.5-9.5    6.5-9.5
粘度mpa . S        300-600     600-1000   1000-1400
PH值               6.0-8.5     6.0-8.5     6.0-8.5
干燥减量%          ≤10        10         10
氯化物(C~)%      ≤1.8       1.8        1.8
重金属(Pb)%      ≤0.004     0.004      0.004
砷(As)%          ≤0.003     0.003      0.003
铁(Fe)%          ≤ 0.03     0.03       0.03

Storage:
CMC的最大用途是配制肥皂及合成洗涤剂,在重级清洁剂中大约添加1%的CMC,用以防止洗出的污物再沉淀于织物上。其次是用作石油工业钻井泥浆的悬浮稳定剂,在造纸工业中作添加剂可提高纸的纵向强度和平滑度,作涂料可提高纸的印刷可适应性,在食品工业中用作增稠剂、乳液稳定剂及冰淇淋的冰晶抑制剂;在纺织工业中用作浆剂、印染浆的增稠剂;在医药工业中可作针剂的乳化稳定剂、片剂的粘结剂和成膜剂;在化妆品中、陶瓷等生产中用作增稠剂。
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