膨润土

膨润土用途

用途一：用于铁精矿球团、钻井泥浆、铸造型砂粘结剂、动植物油脱色、净化剂、塑料填料、干燥剂、吸附剂等。用途二：GB 2760-96：加工助剂；净化剂；抗结剂；悬浮剂；乳化剂。主要用于葡萄酒的澄清；生啤酒中悬浮酵母的助滤剂。可有效吸附蛋白质、色素及带正电荷的胶体离子而产生凝聚作用。使用时加 10倍量水使之充分溶胀，搅成浆状后加于待处理果汁等中，搅拌分散均匀，0.5～1.0h后过滤。用途三：膨润土可作为黏结剂、吸附剂、填充剂、触变剂、絮凝剂、洗涤剂、稳定剂、增稠剂等，用作化肥、杀菌剂和农药的载体，橡胶和塑料的填料，合成树脂和油墨的防沉降助剂，颜料和原浆涂料的触变和增稠，日用化工品的添加剂，医药的吸着剂和黏结剂等。

膨润土名称

[ CAS 号 ]:
1302-78-9

[ 中文名 ]:
皂土(膨润土)

[ 英文名 ]:
Bentonite

[中文别名 ]:

[英文别名 ]:

Ethanol, 2,2',2''-nitrilotris-, trinitrate (ester)
nitrilotriethane-2,1-diyl trinitrate
MFCD00130611
EINECS 215-108-5
Nitrilotri-2,1-ethanediyl trinitrate
bentonite
trolnitrate
Montmorillinite clay

膨润土物理化学性质

[ 密度 ]:
1.5±0.1 g/cm3

[ 沸点 ]:
381.8±37.0 °C at 760 mmHg

[ 分子式 ]:
Al₂H₂O₁₂Si₄

[ 分子量 ]:
284.181

[ 闪点 ]:
184.7±26.5 °C

[ 精确质量 ]:
284.060425

[ PSA ]:
189.16000

[ LogP ]:
2.24

[ 外观性状 ]:
凝胶,或干的时候是固体

[ 蒸汽压 ]:
0.0±0.9 mmHg at 25°C

[ 折射率 ]:
1.503

[ 储存条件 ]:
通风低温干燥

[ 稳定性 ]:
Stable.

[ 水溶解性 ]:
Practically insoluble in water and in aqueous solutions. It swells with a little water forming a malleable mass. | Insoluble in water and forms a colloidal solution.

膨润土MSDS

详细MSDS(安全技术说明书)

膨润土毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: CT9450000

CHEMICAL NAME :: Bentonite

CAS REGISTRY NUMBER :: 1302-78-9

LAST UPDATED :: 199710

WISWESSER LINE NOTATION :: .AL2.SI4.C10.Q2.QH#

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 35 mg/kg

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - acute pulmonary edema

REFERENCE :: BSIBAC Bolletino della Societe Italiana di Biologia Sperimentale. (Casa Editrice Idelson, Via A. de Gasperi, 55, 80133 Naples, Italy) V.2- 1927- Volume(issue)/page/year: 44,1685,1968

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 10 mg/kg

TOXIC EFFECTS :: Vascular - thrombosis distant from injection site

REFERENCE :: JCINAO Journal of Clinical Investigation. (Rockefeller Univ. Press, 1230 York Ave., New York, NY 10021) V.1- 1924- Volume(issue)/page/year: 42,860,1963 ** TUMORIGENIC DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 12000 gm/kg/28W-C

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Liver - tumors

REFERENCE :: ANYAA9 Annals of the New York Academy of Sciences. (New York Academy of Sciences, 2 E. 63rd St., New York, NY 10021) V.1- 1877- Volume(issue)/page/year: 57,678,1954 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 90340 No. of Facilities: 22741 (estimated) No. of Industries: 169 No. of Occupations: 130 No. of Employees: 286502 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X1608 No. of Facilities: 70 (estimated) No. of Industries: 3 No. of Occupations: 3 No. of Employees: 1732 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X9436 No. of Facilities: 171 (estimated) No. of Industries: 2 No. of Occupations: 4 No. of Employees: 6525 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X9494 No. of Facilities: 115 (estimated) No. of Industries: 4 No. of Occupations: 3 No. of Employees: 11850 (estimated) No. of Female Employees: 11045 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 90340 No. of Facilities: 31430 (estimated) No. of Industries: 212 No. of Occupations: 147 No. of Employees: 545795 (estimated) No. of Female Employees: 36750 (estimated)

膨润土安全信息

[ 个人防护装备 ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter

[ 危害码 (欧洲) ]:
Xn

[ 风险声明 (欧洲) ]:
R20/22;R8

[ 安全声明 (欧洲) ]:
S22-S24/25

[ 危险品运输编码 ]:
NONH for all modes of transport

[ WGK德国 ]:
3

[ RTECS号 ]:
CT9450000

[ 海关编码 ]:
3802900090

膨润土制备

1.膨润土选矿方法一般分为干法和湿法两种。

干法选矿一般用来处理原矿质量较好的膨润土。该法是将原矿晾晒、自然风干或用干燥炕、烘干炉干燥后，先用人工或颚式破碎机破碎，再用雷蒙磨和其他辊碾机碾磨粉碎成100目、150目、200目级别的产品。

湿法选矿一般用来处理蒙脱石含量30%～80%的低品位膨润土。该法是将原矿粉碎到小于50mm的粒级，加水制成悬浮液后，在水力分离器中进行分级，所获细级别精矿在沉淀器中浓缩，在干燥机中干燥后，再进行粉磨，可获得适用于钻井泥浆品级的产品。

2.膨润土改型：包括钙基膨润土钠化、活性白土及有机膨润土的制备。

(1)膨润土钠化也分干法和湿法两种。干法是将含钠试剂(一般为碳酸钠)加入到钙基土中，经过混碾和挤压、NaCa置换反应而转化为钠基膨润土。湿法是在试剂与土混合时，充分加水搅拌分散。

(2)酸性(活性)白土的制备也有干法和湿法两种。湿法是在混合挤压成条前，添加盐酸(或硫酸)、水及分散剂，并充分搅拌分散；干法则只需加入盐酸(或硫酸)，再充分搅拌即可。

(3)有机膨润土是将钠基膨润土加入有机胺盐的乙二醇溶液中，经高速搅拌、置换反应而成。

膨润土海关

[ 海关编码 ]: 3802900090

膨润土文献

Seawater ultrafiltration: role of particles on organic rejections and permeate fluxes.

Environ. Technol. 34(17-20) , 2553-61, (2013)

The role of natural compounds of seawater and added particles on mechanisms of membrane fouling and organic matter rejection has been investigated. Ultrafiltration (100 kDa) has been conducted in both...

Bisphenol A sorption by organo-montmorillonite: implications for the removal of organic contaminants from water.

Chemosphere 107 , 249-56, (2014)

Remediation of bisphenol A (BPA) from aqueous solutions by adsorption using organoclays synthesized from montmorillonite (MMT) with different types of organic surfactant molecules was demonstrated. Hi...

Non-selective oxidation of humic acid in heterogeneous aqueous systems: a comparative investigation on the effect of clay minerals.

Environ. Technol. 35(17-20) , 2389-400, (2014)

Application of photocatalysis for degradation of natural organic matter (NOM) has received wide interest during the last decades. Besides NOM, model compounds more specifically humic acids (HAs) were ...

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膨润土