硼酸_MSDS_用途_密度_硼酸CAS号【10043-35-3】

硼酸是一种防腐剂。硼酸是淡而无味的。

[ 描述 ]:

硼酸是一种防腐剂。硼酸是淡而无味的。

[ 相关类别 ]:

研究领域 >> 其他

信号通路 >> 其他 >> 其他

[参考文献]

[1]. Cane L. Boracic Acid and Its Application. Am J Dent Sci. 1876;10(7):316-318.

[ 密度 ]:
1.4±0.1 g/cm3

[ 沸点 ]:
219-220 °C (9.7513 mmHg)

[ 熔点 ]:
169 °C

[ 分子式 ]:
H₃BO₃

[ 分子量 ]:
61.833

[ 精确质量 ]:
62.017525

[ PSA ]:
60.69000

[ LogP ]:
-0.29

[ 外观性状 ]:
无色或白色无臭结晶固体

[ 蒸汽压 ]:
2.6 mm Hg ( 20 °C)

[ 折射率 ]:
1.385

[ 储存条件 ]:
库房通风低温干燥,与金属钾分开存放,与(CH3CO)2O分开存放

[ 水溶解性 ]:
49.5 g/L (20 ºC)

详细MSDS(安全技术说明书)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: ED4550000

CHEMICAL NAME :: Boric acid

CAS REGISTRY NUMBER :: 10043-35-3

LAST UPDATED :: 199712

DATA ITEMS CITED :: 62

MOLECULAR FORMULA :: B-H3-O3

MOLECULAR WEIGHT :: 61.84

WISWESSER LINE NOTATION :: QBQQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Human

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 429 mg/kg

TOXIC EFFECTS :: Cardiac - other changes Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - child

DOSE/DURATION :: 500 mg/kg

TOXIC EFFECTS :: Gastrointestinal - nausea or vomiting

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - woman

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Behavioral - fluid intake Gastrointestinal - hypermotility, diarrhea Gastrointestinal - nausea or vomiting

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - infant

DOSE/DURATION :: 800 mg/kg/4W-I

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold Gastrointestinal - hypermotility, diarrhea Gastrointestinal - nausea or vomiting

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - infant

DOSE/DURATION :: 934 mg/kg

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

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Human - infant

DOSE/DURATION :: 1200 mg/kg

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold Skin and Appendages - dermatitis, other (after systemic exposure) Nutritional and Gross Metabolic - body temperature increase

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Human - child

DOSE/DURATION :: 4 gm/kg/4D

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

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 2430 mg/kg

TOXIC EFFECTS :: Gastrointestinal - hypermotility, diarrhea Skin and Appendages - primary irritation (after topical exposure) Nutritional and Gross Metabolic - body temperature increase

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Human - child

DOSE/DURATION :: 1500 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - conjunctive irritation Lungs, Thorax, or Respiration - respiratory depression Gastrointestinal - hypermotility, diarrhea

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Human - infant

DOSE/DURATION :: 1100 mg/kg

TOXIC EFFECTS :: Behavioral - tremor Gastrointestinal - hypermotility, diarrhea Gastrointestinal - nausea or vomiting

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Unreported

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 170 mg/kg

TOXIC EFFECTS :: Behavioral - wakefulness Behavioral - anorexia (human) Gastrointestinal - nausea or vomiting

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Unreported

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 147 mg/kg

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

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 2660 mg/kg

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

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 28 mg/m3/4H

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

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1400 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - ataxia Nutritional and Gross Metabolic - body temperature decrease

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1330 mg/kg

TOXIC EFFECTS :: Behavioral - tremor Gastrointestinal - hypermotility, diarrhea Gastrointestinal - nausea or vomiting

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 3450 mg/kg

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

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 800 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - ataxia Nutritional and Gross Metabolic - body temperature decrease

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1740 mg/kg

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

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1240 mg/kg

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - respiratory depression Gastrointestinal - hypermotility, diarrhea

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 1780 mg/kg

TOXIC EFFECTS :: Brain and Coverings - meningeal changes Lungs, Thorax, or Respiration - cyanosis Gastrointestinal - nausea or vomiting

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Brain and Coverings - meningeal changes Lungs, Thorax, or Respiration - cyanosis Gastrointestinal - nausea or vomiting

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Parenteral

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Peripheral Nerve and Sensation - flaccid paralysis without anesthesia (usually neuromuscular blockage)

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 4 gm/kg

TOXIC EFFECTS :: Behavioral - tremor Gastrointestinal - hypermotility, diarrhea Gastrointestinal - nausea or vomiting

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 150 mg/kg

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

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 800 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - ataxia Nutritional and Gross Metabolic - body temperature decrease

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Parenteral

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 670 mg/kg

TOXIC EFFECTS :: Nutritional and Gross Metabolic - body temperature decrease

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Gastrointestinal - nausea or vomiting Gastrointestinal - other changes

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 1200 mg/kg

TOXIC EFFECTS :: Behavioral - tremor Gastrointestinal - hypermotility, diarrhea Gastrointestinal - nausea or vomiting

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 45 gm/kg/90D-C

TOXIC EFFECTS :: Brain and Coverings - changes in brain weight Nutritional and Gross Metabolic - weight loss or decreased weight gain Related to Chronic Data - changes in testicular weight

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 68 mg/kg/9W-I

TOXIC EFFECTS :: Nutritional and Gross Metabolic - weight loss or decreased weight gain Nutritional and Gross Metabolic - changes in calcium Nutritional and Gross Metabolic - changes in phosphorus

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 42 gm/kg/14D-C

TOXIC EFFECTS :: Related to Chronic Data - death

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 156 gm/kg/13W-I

TOXIC EFFECTS :: Gastrointestinal - other changes Blood - changes in spleen Related to Chronic Data - death

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 23 gm/kg/90D-C

TOXIC EFFECTS :: Liver - changes in liver weight Endocrine - changes in thyroid weight Related to Chronic Data - changes in testicular weight

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 6600 mg/kg

SEX/DURATION :: female 1-21 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system Reproductive - Specific Developmental Abnormalities - other developmental abnormalities

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 45 gm/kg

SEX/DURATION :: male 90 day(s) pre-mating

TOXIC EFFECTS :: Reproductive - Paternal Effects - testes, epididymis, sperm duct

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 5390 mg/kg

SEX/DURATION :: female 6-15 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 1596 mg/kg

SEX/DURATION :: female 0-20 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 52 mg/kg

SEX/DURATION :: male 26 week(s) pre-mating

TOXIC EFFECTS :: Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count)

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

DOSE :: 9600 ug/m3/4H

SEX/DURATION :: male 16 week(s) pre-mating

TOXIC EFFECTS :: Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count) Reproductive - Paternal Effects - testes, epididymis, sperm duct

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 7684 mg/kg

SEX/DURATION :: female 1-17 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 17051 mg/kg

SEX/DURATION :: female 1-17 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 18054 mg/kg

SEX/DURATION :: female 1-18 day(s) after conception

TOXIC EFFECTS :: Reproductive - Maternal Effects - uterus, cervix, vagina Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 8136 mg/kg

SEX/DURATION :: female 1-18 day(s) after conception

TOXIC EFFECTS :: Reproductive - Maternal Effects - other effects Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 3500 mg/kg

SEX/DURATION :: female 6-19 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Specific Developmental Abnormalities - cardiovascular (circulatory) system

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 3500 mg/kg

SEX/DURATION :: female 6-19 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured before birth) Reproductive - Specific Developmental Abnormalities - cardiovascular (circulatory) system

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 3500 mg/kg

SEX/DURATION :: female 7-20 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 3500 mg/kg

SEX/DURATION :: female 6-19 day(s) after conception

TOXIC EFFECTS :: Reproductive - Specific Developmental Abnormalities - craniofacial (including nose and tongue) Reproductive - Specific Developmental Abnormalities - other developmental abnormalities

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 1750 mg/kg

SEX/DURATION :: female 7-20 day(s) after conception

TOXIC EFFECTS :: Reproductive - Maternal Effects - uterus, cervix, vagina Reproductive - Maternal Effects - other effects

MUTATION DATA

TYPE OF TEST :: Mutation in microorganisms

TEST SYSTEM :: Bacteria - Escherichia coli

DOSE/DURATION :: 17000 ppm/24H

REFERENCE :: AMNTA4 American Naturalist. (Univ. of Chicago Press, Journals Div., POB 37005, Chicago, IL 60637) V.1- 1867- Volume(issue)/page/year: 85,119,1951 *** REVIEWS *** TOXICOLOGY REVIEW CLCHAU Clinical Chemistry (Winston-Salem, NC). (American Assoc. for Clinical Chemistry, 1725 K St., NW, Washington, DC 20006) V.1- 1955- Volume(issue)/page/year: 19,361,1973 TOXICOLOGY REVIEW FNSCA6 Forensic Science. (Lausanne, Switzerland) V.1-11, 1972-78. For pub lisher information, see FSINDR. Volume(issue)/page/year: 2,67,1973 TOXICOLOGY REVIEW JOPDAB Journal of Pediatrics. (C.V. Mosby Co., 11830 Westline Industrial Dr., St. Louis, MO 63141) V.1- 1932- Volume(issue)/page/year: 61,531,1962 *** 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 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 10 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X7080 No. of Facilities: 27071 (estimated) No. of Industries: 187 No. of Occupations: 128 No. of Employees: 489668 (estimated) No. of Female Employees: 211838 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X8324 No. of Facilities: 84 (estimated) No. of Industries: 3 No. of Occupations: 4 No. of Employees: 2919 (estimated) No. of Female Employees: 1712 (estimated)

[ 符号 ]:

GHS08

[ 信号词 ]:
Danger

[ 危害声明 ]:
H360FD

[ 警示性声明 ]:
P201-P308 + P313

[ 个人防护装备 ]:
Eyeshields;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) ]:
T:Toxic;

[ 风险声明 (欧洲) ]:
R60

[ 安全声明 (欧洲) ]:
S26-S36-S53-S45

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

[ WGK德国 ]:
2

[ RTECS号 ]:
ED4550000

[ 危险类别 ]:
9.0

[ 海关编码 ]:
2810002000

1.硼砂硫酸中和法将硼砂溶解成相对密度30～32°Bé的溶液，滤去杂质，然后放入酸解罐，于90℃时加入当量硫酸，使溶液在Ph2～3时进行反应。反应完成液经冷却、结晶、分离、干燥后制得硼酸成品。其
反应方程式如下：

2.碳氨法将焙烧后的硼矿粉与碳酸氢铵混合，在浸取釜内加热物料至140℃、压力1.5～2.0 Mpa反应4h左右，放出剩余气体，经吸氨塔将氨回收，当温度降至110℃时即可放料。经过滤机过滤洗涤后，排除废渣，溶液送入蒸氨塔进行脱氨，可回收氨水。当蒸至氨硼比低于0.04(摩尔比)时再经浓缩、冷却、结晶、分离、干燥后，制得硼酸产品。其反应方程式如下：

3.盐酸法将硼精矿粉用母液和水调配至适当浓度后，送入酸解罐，徐徐加入盐酸到指定的酸量后，搅拌一定时间，再升温至95～100℃，反应2h，然后过滤，弃去滤渣，滤液经冷却、结晶、离心分离、水洗、干燥、包装，制得硼酸产品。其反应方程式如下：

4.电解电渗析法把碳碱法硼砂来的碳解液，加入冷凝水调节到规定的含硼浓度，作为阳极室的原料液，碳酸钠经碳化后的含有碳酸氢钠的碳化液，作为阴极室的原料液；分别经控制过滤后用泵打人电解电渗析槽的相应极室内。待流量稳定后，通入直流电，调节到规定的操作电流。当阳极室流出液达到规定的Ph值时，则送去蒸发，再经冷却结晶、离心分离、干燥，制得硼酸成品。
5.多硼酸钠法将硼镁矿焙烧粉碎成一定细度的矿粉，按照低于理论量的配碱比与纯碱溶液配成适当液固比的料浆，通入不同浓度的二氧化碳气体，在一定温度和压力下进行碳解反应，反应后的料浆经过滤弃去泥渣。将得到的多硼酸钠溶液经蒸浓后加入硫酸中和，冷却结晶、离心分离，干燥，制得硼酸成品。其反应方程式如下：

6.井盐卤水盐酸法由含硼卤水与盐酸一起蒸煮，再经脱水、冷却结晶、离心分离、干燥，制得硼酸成品。 7.将100g经反复重结晶精制的硼砂Na2B4O7·10H2O溶解于250g沸水配制成热的溶液。向这种溶液添加150mL 25%盐酸，放置1d之后在玻璃棉上抽滤，用少量水洗涤几次，直到没有氯离子为止。然后用3.5倍的沸水反复重结晶。结晶夹在滤纸中间干燥，再放到装有浓硫酸的真空干燥器中干燥。提纯方法为将硼酸反复进行重结晶。取少量硼酸，装到坩埚里熔融，试一试是否成为无色玻璃状。如果变成灰色就说明含有有机物。这时将硼酸和硝酸铵混合熔融成为均匀液体，再使其固化制成B2O3，然后B2O3加水煮沸溶解之后，使其蒸发结晶。 8. 将1份工业硼酸与2份蒸馏水在搪瓷桶内混合并加热溶解，用双层滤布中间夹一层滤纸，趁热过滤，滤液冷却结晶，离心脱水，于70℃下烘干。 9. 以工业硼酸为原料，用母液或蒸馏水加热溶解，经过滤、冷却结晶、离心分离和干燥等工序制得。先在溶解槽内放进一定量的母液（第一次开车用蒸馏水），开动搅拌器加热升温至95℃左右，然后缓慢加热工业硼酸，硼酸的投入量以控制溶解液含硼酸每升260ｇ左右为宜。当工业硼酸完全溶解后，保持（85±5）℃进行真空吸滤，除掉水不溶物。滤液送至结晶槽，开动搅拌，用水间接冷却搅拌结晶。当结晶液冷却到接近室温时，用离心机进行固液分离。在离心机中，先甩干晶体，并酌情用蒸馏水淋洗离心机中的晶体，除去黏附在晶体表面的可溶性杂质，甩干出料，晶体送干燥得成品。母液和洗液供溶解工业硼酸循环使用，直至对产品质量有影响时，再浓缩结晶回收工业硼酸。 10. 重结晶法　此法主要用于精制工业硼酸制得高纯度硼酸。将工业硼酸溶于蒸馏水中，经除杂、提纯、过滤、结晶、离心分离、干燥，制得成品。如需要制更高纯度的硼酸，可采用多次结晶法获得。

[ 海关编码 ]: 2810002000

High-throughput electrophoretic mobility shift assays for quantitative analysis of molecular binding reactions.

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We describe a platform for high-throughput electrophoretic mobility shift assays (EMSAs) for identification and characterization of molecular binding reactions. A photopatterned free-standing polyacry...

Formulation approaches to improving the delivery of an antiviral drug with activity against seasonal flu.

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The main objective of the present study was to develop formulations of noscapine hydrochloride hydrate with enhanced solubility and bioavailability using co-solvent- and cyclodextrin-based approaches....

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Human PREP1 and PBX1 are homeodomain transcriptional factors, whose biochemical and structural characterization has not yet been fully described. Expression of full-length recombinant PREP1 (47.6 kDa)...

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公司名：上海化源世纪贸易有限公司

区域：上海市普陀区

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联系人：徐经理

产品详情：硼酸

公司名：上海吉至生化科技有限公司

区域：上海市奉贤区

价格：
￥58.0/500g ￥78.0/1kg ￥368.0/5kg

联系人：刘佳

产品详情：硼酸

公司名：上海阿拉丁生化科技股份有限公司

区域：上海市浦东新区

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￥295.0/500g ￥需询单/1g ￥需询单/1g ￥157.0/100g

联系人：阿拉丁

产品详情：硼酸

公司名：中山市迪欣化工有限公司

区域：中山市三角镇

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￥12.0/1000kg

联系人：陈雪萍

产品详情：硼酸

公司名：山东金悦源新材料有限公司

区域：济南市天桥区

价格：
￥100.0/25kg ￥5000.0/1ton

联系人：王思兵

产品详情：硼酸

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