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硅酸

硅酸用途

用途一：用作分析试剂
用途二：本品作混凝剂，在天然水和污水处理中能强化混凝效果。可单独使用，也可与其他水解混凝剂配合使用。配合使用时，能增加悬浮物的密度，加速絮凝和絮状物的沉淀。

硅酸名称

[ CAS 号 ]:
7699-41-4

[ 中文名 ]:
硅酸

[ 英文名 ]:
silicic acid

[英文别名 ]:

MFCD00054122
Silicic Acid Hydrate
EINECS 215-683-2
SILICIC ACID

硅酸物理化学性质

[ 熔点 ]:
1704℃

[ 分子式 ]:
H₂O₃Si

[ 分子量 ]:
78.09960

[ 精确质量 ]:
77.97730

[ PSA ]:
57.53000

[ 外观性状 ]:
白色非晶形的粉末或大块

[ 储存条件 ]:
室温，干燥

硅酸MSDS

详细MSDS(安全技术说明书)

硅酸毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: VV8850000

CHEMICAL NAME :: Silicic acid

CAS REGISTRY NUMBER :: 7699-41-4

LAST UPDATED :: 199701

DATA ITEMS CITED :: 8

MOLECULAR FORMULA :: H2-O3-Si

MOLECULAR WEIGHT :: 78.11

WISWESSER LINE NOTATION :: ..H2.SI-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 234 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :: DNA damage

TEST SYSTEM :: Mammal - species unspecified Lymphocyte

DOSE/DURATION :: 500 mmol/L

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 208,27,1988 *** REVIEWS *** 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: 42,39,1987 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: 42,39,1987 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: 7,341,1987

硅酸安全信息

[ 符号 ]:

GHS07

[ 信号词 ]:
Warning

[ 危害声明 ]:
H319-H335

[ 警示性声明 ]:
P261-P305 + P351 + P338

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xi

[ 风险声明 (欧洲) ]:
R36/37

[ 安全声明 (欧洲) ]:
22-26-36

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

[ WGK德国 ]:
3

[ RTECS号 ]:
VV8853000

[ 海关编码 ]:
2842909090

硅酸制备

1.将一定量的水玻璃（SiO₂ 22.9%～39%， Na₂O 8.6%～14.6%）加入反应釜中，再在搅拌下加少量硫酸充分溶解，然后再加入一定量的硫酸铝（Si/Al摩尔比为2︰5）。加水稀释至SiO₂侪为制备含量的0.5%～1.0%。充分搅拌，静止陈化1.5h即可得到活性硅絮凝剂。

硅酸海关

[ 海关编码 ]: 2842909090

硅酸文献

Apolar Radical Initiated Conjugated Autoxidizable Triene (ApoCAT) Assay: Effects of Oxidant Locations on Antioxidant Capacities and Interactions.

J. Agric. Food Chem. 63 , 7546-55, (2015)

Development of an antioxidant assay explaining antioxidant behaviors in complex food systems has been a challenging topic for food scientists. This research aimed to investigate antioxidant capacities...

Monitoring the formation of cholesterol oxidation products in model systems using response surface methodology.

Lipids Health Dis. 14 , 77, (2015)

Cholesterol oxidation products (COPs) are produced during thermal processing of animal origin foods and are considered to have negative health impacts. The model systems are helpful to understand the ...

Effect of resin infiltration on enamel surface properties and Streptococcus mutans adhesion to artificial enamel lesions.

Dent. Mater. J. 34(1) , 25-30, (2015)

The aim of this study was to evaluate and compare the effects of resin infiltration and sealant type on enamel surface properties and Streptococcus mutans adhesion to artificial enamel lesions. Artifi...

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硅酸