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偏硅酸钠

偏硅酸钠用途

【用途一】
用于纺织、电镀、填料及催化剂等
【用途二】
用于制造洗涤剂、织物处理剂和纸张脱墨剂等
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偏硅酸钠名称

[ CAS 号 ]:
6834-92-0

[ 中文名 ]:
无水偏硅酸钠

[ 英文名 ]:
Sodium metasilicate

[中文别名 ]:

[英文别名 ]:

偏硅酸钠物理化学性质

[ 密度 ]:
2.4

[ 熔点 ]:
1089°C

[ 分子式 ]:
Na2O3Si

[ 分子量 ]:
122.06300

[ 精确质量 ]:
121.94100

[ PSA ]:
63.19000

[ 外观性状 ]:
白色颗粒

[ 储存条件 ]:
室温

偏硅酸钠MSDS

偏硅酸钠毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :
VV9275000
CHEMICAL NAME :
Silicic acid (H2SiO3), disodium salt
CAS REGISTRY NUMBER :
6834-92-0
LAST UPDATED :
199710
DATA ITEMS CITED :
18
MOLECULAR FORMULA :
O3-Si.2Na
MOLECULAR WEIGHT :
122.07
WISWESSER LINE NOTATION :
NA2 SI-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Human
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 31,481,1975
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 31,481,1975
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - guinea pig
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 31,481,1975 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1153 mg/kg
TOXIC EFFECTS :
Gastrointestinal - ulceration or bleeding from stomach Gastrointestinal - ulceration or bleeding from duodenum Gastrointestinal - ulceration or bleeding from small intestine
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 31(Suppl),44,1986
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
770 mg/kg
TOXIC EFFECTS :
Gastrointestinal - ulceration or bleeding from stomach Gastrointestinal - ulceration or bleeding from duodenum Gastrointestinal - ulceration or bleeding from small intestine
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 31(Suppl),44,1986
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
250 mg/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - other changes Gastrointestinal - other changes Kidney, Ureter, Bladder - other changes
REFERENCE :
FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 14,78,1976
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - pig
DOSE/DURATION :
250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 14,78,1976
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JAMAAP JAMA, Journal of the American Medical Association. (AMA, 535 N. Dearborn St., Chicago, IL 60610) V.1- 1883- Volume(issue)/page/year: 111,1925,1938 ** REPRODUCTIVE DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
15 gm/kg
SEX/DURATION :
male 14 week(s) pre-mating female 14 week(s) pre-mating - 3 week(s) post-birth
TOXIC EFFECTS :
Reproductive - Effects on Newborn - stillbirth Reproductive - Effects on Newborn - live birth index (measured after birth) Reproductive - Effects on Newborn - weaning or lactation index (e.g., # alive at weaning per # alive at day 4)
REFERENCE :
JANSAG Journal of Animal Science. (American Soc. of Animal Science, 309 W. Clark St., Champaign, IL 61820) V.1- 1942- Volume(issue)/page/year: 36,271,1973
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
9766 ug/kg
SEX/DURATION :
male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Paternal Effects - testes, epididymis, sperm duct
REFERENCE :
JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 7,21,1964
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intratesticular
DOSE :
9766 ug/kg
SEX/DURATION :
male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Paternal Effects - testes, epididymis, sperm duct
REFERENCE :
JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 7,21,1964 *** REVIEWS *** TOXICOLOGY REVIEW NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: PB-287-766 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80079 No. of Facilities: 97326 (estimated) No. of Industries: 300 No. of Occupations: 154 No. of Employees: 838120 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 80079 No. of Facilities: 59514 (estimated) No. of Industries: 281 No. of Occupations: 164 No. of Employees: 971688 (estimated) No. of Female Employees: 275947 (estimated)
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偏硅酸钠安全信息

[ 符号 ]:

GHS05, GHS07

[ 信号词 ]:
Danger

[ 危害声明 ]:
H290-H314-H335

[ 警示性声明 ]:
P261-P280-P305 + P351 + P338-P310

[ 个人防护装备 ]:
Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges

[ 危害码 (欧洲) ]:
C:Corrosive

[ 风险声明 (欧洲) ]:
R34;R37

[ 安全声明 (欧洲) ]:
S26-S45-S36/37/39-S13-S24/25

[ 危险品运输编码 ]:
UN 3253 8/PG 3

[ WGK德国 ]:
1

[ RTECS号 ]:
VV9275000

[ 包装等级 ]:
III

[ 危险类别 ]:
8

[ 海关编码 ]:
2839110000

偏硅酸钠制备

1.将碳酸钠(或氢氧化钠)与硅砂按Na2O/SiO2=1∶3摩尔比混合,在铂坩埚中熔解,将其溶于水中,即成为硅酸钠水溶液。在溶液中加入计算量的氢氧化钠,使溶液中的Na2O/SiO2的摩尔比为1∶1。将制得的这种Na2O/SiO2组成的溶液加热至数十度,浓缩,冷却至30℃制得九水合物,加热即可制得无水物。

2.干法 包括纯碱法、硫酸钠(芒硝)法和天然碱法。纯碱法:将纯碱和硅砂按一定比例均匀混合,在1400~1500℃进行熔融反应,熔融物经水游淬冷却形成玻璃料,趁热投入溶解槽内,再通入蒸汽加热,经沉降、浓缩,制得水玻璃。其反应式如下。

硫酸钠法:先将硫钠(芒硝)和煤粉均匀混合,再加入硅砂,混合均匀后快速加入炉内进行反应,反应完成后,生成物出炉冷却、粉碎、溶解、沉淀、浓缩,制得水玻璃。其反应式如下。

天然碱法:将天然碱、硅砂和煤粉按一定比例混合,再加入起调节作用的烧碱渣,把混合料经炉顶预热2~4h后投入炉内进行反应,经3~5h生成熔融物,经出料水淬冷却,把冷却形成的玻璃料溶解、沉淀、浓缩制得水玻璃。其反应式如下。

3.湿法 将液体烧碱和硅砂按适当比例混合加入压热釜中,通入直接蒸汽加热,待反应釜中压力升至0.7~0.8MPa后,停止通入直接蒸汽,用夹套蒸汽保温,维持此压力,反应数小时,将反应物过滤、浓缩,制得水玻璃。其反应式如下。

4.将氢氧化钠溶液按理论量加到硅砂中,加热搅拌至溶解,保温反应数小时:

反应结束后,过滤。滤液浓缩后,30℃左右冷却结晶,分离出的结晶用乙醇洗涤,干燥,即可。

5.将13%~14%的氢氧化钠溶液加到含二氧化硅30.85%、氧化钠14.34%的水玻璃中,搅拌后过滤,使滤液完全透明,然后,在滤液中加入少量九水合硅酸钠晶种,静置。结晶抽滤后,用乙醇洗涤、干燥即可。

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偏硅酸钠海关

[ 海关编码 ]: 2839110000

偏硅酸钠文献

Reactive airways dysfunction syndrome from acute inhalation of a dishwasher detergent powder.

Can. Respir. J. 19(3) , e25-8, (2012)

Reactive airway dysfunction syndrome, a type of occupational asthma without a latency period, is induced by irritating vapour, fumes or smoke. The present report is the first to describe a case of rea...

Hair highlights and severe acute irritant dermatitis ("burn") of the scalp.

Cutan. Ocul. Toxicol. 29(4) , 229-33, (2010)

These days, most celebrities--young and old--have their hair highlighted. That is why it is not surprising that even the youth have their hair highlighted as they emulate their favorite actors, unawar...

Synthesis and Structure of NaZnSiO(3)OH, a New Chiral Zincosilicate Framework Material.

Inorg. Chem. 38 , 455, (1999)

The structure of NaZnSiO(3)OH, synthesized hydrothermally by reaction of Na(2)ZnSiO(4) and NaOH, has been determined from single-crystal X-ray and powder neutron diffraction data (orthorhombic, space ...


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相关化合物

【偏硅酸钠】化源网提供偏硅酸钠CAS号6834-92-0,偏硅酸钠MSDS及其说明、性质、英文名、生产厂家、作用/用途、分子量、密度、沸点、熔点、结构式等。CAS号查询偏硅酸钠上化源网,专业又轻松。>>电脑版:偏硅酸钠

标题:偏硅酸钠_MSDS_用途_密度_偏硅酸钠CAS号【6834-92-0】_化源网 地址:https://m.chemsrc.com/mip/cas/6834-92-0_830274.html