偏硅酸钙

偏硅酸钙用途

用途一：硅灰石在涂料工业中可以作为体质颜料兼增量剂使用。因为它能增加白色涂料的明亮色调，并能长时间保持这种色调。硅灰石的针状结晶使它可以作为涂料良好的平安剂，并可以改善涂料的流平性。硅灰石的粒子形状使它可以作为涂料良好的悬浮剂，使色漆的沉淀柔软易于分散。可以在自清洁型涂料中作为增强剂。硅灰石粉碱性大，非常适用于聚醋酸乙烯涂料，使着色颜料色散均匀。硅灰石还具有改进金属漆防腐蚀能力。除用于水性涂料外，还可用于底漆、中间涂层、油性涂料、路标涂料等，在沥青涂料中可取代石棉。在乳胶漆中能部分取代钛白粉，同时不使白度和遮盖力下降。也可用于冶金、陶瓷、电焊条、塑料、橡胶等行业。
用途二：可用作橡胶、塑料、树脂、油漆、涂料的填充剂。还广泛用于陶瓷、冶金、建筑、机械、电子、焊接、造纸、农业和汽车工业等部门。硅灰石具有广阔的开发前景。

偏硅酸钙名称

[ CAS 号 ]:
13983-17-0

[ 中文名 ]:
偏硅酸钙

[ 英文名 ]:
Calcium metasilicate

[英文别名 ]:

EINECS 237-772-5

偏硅酸钙物理化学性质

[ 密度 ]:
2.9

[ 熔点 ]:
1540ºC

[ 分子式 ]:
CaO₃Si

[ 分子量 ]:
116.162

[ 精确质量 ]:
115.924263

[ PSA ]:
63.19000

[ 外观性状 ]:
白色或奶油色粉末

[ 折射率 ]:
1.62-1.64

[ 储存条件 ]:
室温

[ 稳定性 ]:
Stable.

偏硅酸钙毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: ZC9750000

CHEMICAL NAME :: Wollastonite

CAS REGISTRY NUMBER :: 13983-17-0

LAST UPDATED :: 199710

DATA ITEMS CITED :: 12

MOLECULAR FORMULA :: O3-Si.Ca

MOLECULAR WEIGHT :: 116.17

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Implant

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application

MUTATION DATA

TYPE OF TEST :: Sister chromatid exchange

TEST SYSTEM :: Human Lymphocyte

DOSE/DURATION :: 10 mg/L

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 300,45,1993 *** REVIEWS *** IARC Cancer Review:Animal Limited Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 42,145,1987 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 42,145,1987 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 68,283,1997 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 68,283,1997 IARC Cancer Review:Group 3 IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,377,1987 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M1813 No. of Facilities: 112 (estimated) No. of Industries: 5 No. of Occupations: 9 No. of Employees: 1878 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M1813 No. of Facilities: 4588 (estimated) No. of Industries: 52 No. of Occupations: 52 No. of Employees: 70383 (estimated) No. of Female Employees: 10024 (estimated)

偏硅酸钙安全信息

[ 危害码 (欧洲) ]:
Xi:Irritant

[ 风险声明 (欧洲) ]:
R36/37

[ 安全声明 (欧洲) ]:
S22-S26-S37/39

偏硅酸钙制备

我国硅灰石矿品位较高，只需进行简单筛选即可得到特级、一级、二级硅灰石矿块。硅灰石的加工主要是利用硅灰石矿块，采用各种磨矿和超细粉碎设备生产各种规格的硅灰石粉，或进行表面改性。

硅灰石粉的制备经拣选除去杂质的矿块送入颚式破碎机粗碎和中碎，然后进入雷蒙磨或其他干式磨矿设备进行磨矿，经过旋风分级获得200目、325目硅灰石普通粉。该普通粉再送入流化床式或其他类型的气流粉碎机中进行超细粉碎，以获得小于10μm超细硅灰石粉或针状硅灰石粉。