有机硅胶溶解剂

有机硅胶溶解剂 我们公司实验室用丙酮氢氧化钠和乙醇的混合溶液 对不起，您这个固化这个词是不是交联的意思，如果是，就没有溶剂了，因为交 联的聚合物是不能溶解的，最多溶胀。 若没有交联，你可以用四氢呋喃，这是我们实验室做实验时，比较强的溶剂了。 四氢呋喃 求助编辑百科名片 四氢呋喃 四氢呋喃是一类杂环有机化合物。它是最强的极性醚类之一，在化学反应和萃取 时用做一种中等极性的溶剂。 简介 理化性质 用途 危险性 毒理学简介 简介 理化性质 用途 危险性 毒理学简介 展开 编辑本段简介 risk managers with two account manager to deal with the above key. Section I of chapter III risk management requirements pre-loan investigation pre-loan investigation should double handle. Pre-loan investigation dominated by field investigations on the ground, while utilizing credit enquiries, telephone enquiries, bank information system query-related personnel, and so on. Interview system of Bank's strict application of the system of personal credit business interview. Investigators should work with borrowers, to the repayment or the guarantor credit business, such as parties and the spouse of confirmed acts such as loans, guarantees, verification of its authenticity and its rights and obligations in the credit business, retain these signed transcript of the interview, from the first step to prevent false loans and other business risks. Investigator should retain the borrower sign a personal loan application, loan applications should be clearly the amount, purpose, duration and other information. Investigators should follow the practice for information collection and verification of data authenticity it carefully, and keep copies, photocopies must be checked against the original agreement, effectively preventing borrowers using false information to apply for credit. Income and occupation, and other key information to verify authenticity investigators should carefully verifying the borrower's income. To income as the main source of repayment, subject to proof of income is required, but should also audit payroll flowing water, and staff than the peer confirmed the authenticity of the same type; operating income as the main source of repayment, and should refer to the working capital loans required to verify real incomes, accuracy; guard no ability to repay or guarantee of the ability of the borrower, guarantor to obtain credit. Given that some products for an object to have a specific professional restrictions 【英文】 Tetrahydrofuran、hydrofuran、 oxolane、 oxacyclopentan 四氢呋喃结构式 【缩写】 THF、Sqtn 【别称】 氧杂环戊烷、氧戊环 【CAS号】109-99-9 RTECS:LU5950000 【分子式】C4H8O THF是一种澄清、低粘度的液体，具有类似乙醚的气味。室温时THF与水完全混溶。THF在储存时很容易 变成过氧化物。因此，商用的THF经常是用BHT，即2,6一二叔丁基对甲酚来防止氧化。 另外，THF也可以通过氢氧化钠置于密封瓶中存放在暗处。THF是芳香族化合物呋喃的完全氢化的类似物。 编辑本段理化性质 分子量 72.11 相对密度(20?/4?) 0.8892 凝固点/? -108.5 沸点/? 65.4 闪点(闭口)/? 17.2 折光率(20?) 1.407 介电常数(25?) 7.58 偶极矩/(10^-30C?m) 5.70,5.67 表面张力/(mN/m) 26.4 risk managers with two account manager to deal with the above key. Section I of chapter III risk management requirements pre-loan investigation pre-loan investigation should double handle. Pre-loan investigation dominated by field investigations on the ground, while utilizing credit enquiries, telephone enquiries, bank information system query-related personnel, and so on. Interview system of Bank's strict application of the system of personal credit business interview. Investigators should work with borrowers, to the repayment or the guarantor credit business, such as parties and the spouse of confirmed acts such as loans, guarantees, verification of its authenticity and its rights and obligations in the credit business, retain these signed transcript of the interview, from the first step to prevent false loans and other business risks. Investigator should retain the borrower sign a personal loan application, loan applications should be clearly the amount, purpose, duration and other information. Investigators should follow the practice for information collection and verification of data authenticity it carefully, and keep copies, photocopies must be checked against the original agreement, effectively preventing borrowers using false information to apply for credit. Income and occupation, and other key information to verify authenticity investigators should carefully verifying the borrower's income. To income as the main source of repayment, subject to proof of income is required, but should also audit payroll flowing water, and staff than the peer confirmed the authenticity of the same type; operating income as the main source of repayment, and should refer to the working capital loans required to verify real incomes, accuracy; guard no ability to repay or guarantee of the ability of the borrower, guarantor to obtain credit. Given that some products for an object to have a specific professional restrictions 黏度(20?)/mPa?s 0.55 临界温度/? 26.8 临界压力/MPa 5.19 蒸气压(15?)/kPa 15.2 蒸气相对密度(空气=1) 2.5 燃点/? 321.1 蒸发热(66?)/(KJ/Kg) 410 爆炸极限/%(体积) 2.3-11.8 最小引燃能量/mJ 0.54 比热容: 液体:1.96kJ/kg.K 气体: 1.55KJ/kg.K 蒸发热: 410KJ/kg 无色透明液体，有类似乙醚的气味，能溶于乙醇、乙醚、脂肪烃、芳香烃、氯化烃、丙酮、苯等有机溶剂，但水溶性较低，有毒，空气中最高容许浓度为200ppm，小鼠一次吸入米数致死，浓度65毫克/立方米。 编辑本段用途 四氢呋喃具有毒、低沸点、流动性好等特点，是一种重要的有机合成及精细化工原料和优良的溶剂， 四氢呋喃 具有广泛的用途，四氢呋喃对许多有机物有良好的溶解性，它能溶解除聚乙烯，聚丙烯及氟树脂以外的所有有机化合物，特别是对聚氯乙烯，聚偏氯乙烯，和叮苯胺有良好的溶解作用，被广泛用作反应性溶剂，有“万能溶剂”之称。 作为常用溶剂，四氢呋喃已普遍用于表面涂料，保护性涂料，油墨，萃取剂和人造革的表面处理，也是制药行业的主要溶剂。广泛应用于树脂溶剂(磁带涂层、PVC表面涂层、清洗PVC反应器、脱除PVC薄膜、玻璃纸risk managers with two account manager to deal with the above key. Section I of chapter III risk management requirements pre-loan investigation pre-loan investigation should double handle. Pre-loan investigation dominated by field investigations on the ground, while utilizing credit enquiries, telephone enquiries, bank information system query-related personnel, and so on. Interview system of Bank's strict application of the system of personal credit business interview. Investigators should work with borrowers, to the repayment or the guarantor credit business, such as parties and the spouse of confirmed acts such as loans, guarantees, verification of its authenticity and its rights and obligations in the credit business, retain these signed transcript of the interview, from the first step to prevent false loans and other business risks. Investigator should retain the borrower sign a personal loan application, loan applications should be clearly the amount, purpose, duration and other information. Investigators should follow the practice for information collection and verification of data authenticity it carefully, and keep copies, photocopies must be checked against the original agreement, effectively preventing borrowers using false information to apply for credit. Income and occupation, and other key information to verify authenticity investigators should carefully verifying the borrower's income. To income as the main source of repayment, subject to proof of income is required, but should also audit payroll flowing water, and staff than the peer confirmed the authenticity of the same type; operating income as the main source of repayment, and should refer to the working capital loans required to verify real incomes, accuracy; guard no ability to repay or guarantee of the ability of the borrower, guarantor to obtain credit. Given that some products for an object to have a specific professional restrictions 涂层、塑料印刷油墨、热塑性聚氨酯涂层);反应溶剂(格式试剂、烷基碱金属化合物和芳基碱金属化合物、氢化铝和氢化硼、甾族化合物和大分子有机聚合物);色谱溶剂(凝胶渗透色谱法)。四氢呋喃也是生产聚四亚甲基醚二醇(PTMEG)重要原料，并用于天然气加味。 编辑本段危险性 火灾危险 蒸气能与空气形成爆炸性混合物，遇明火、高热、强氧化剂极易引起燃烧爆炸。与氧化剂能发生强烈反应。未加过稳剂时接触空气或在光照条件下可生成具有潜在爆炸危险性的过氧化物。此外，因其蒸气比空气重，所以能扩散至很远，遇火源会引着回燃。若遇高热，容器内压增大，有开裂和爆炸的危险。燃烧时分解产物:一氧化碳，二氧化碳。 消防措施 用干粉、泡沫、二氧化碳、砂土灭火。用水保持火场中容器冷却。 储运须知 包装标志:易燃液体。包装方法:(II)类。玻璃瓶外木箱内衬不燃材料或铁桶。储运条件:储存于阴凉、通风的仓间内。远离热源、火种、避免阳光直射，与氧化剂、酸类隔离储运。泄漏处理 首先切断一切火源，戴好防毒面具与手套。用砂土吸收，倒至空旷地方掩埋。对污染的地面用肥皂或洗涤剂刷洗。经稀释的污水放入废水系统。 接触机会 用作溶剂、化学合成中间体、试剂。国内主要生产厂家:浙江仙居化肥厂，江苏省扬州化工厂，东北制药总厂。 编辑本段毒理学简介 大鼠经口LD50: 1650 mg/kg;吸入LC50: 21000 ppm/3H。小鼠吸入LCLo: 24000 mg/m3/2H。 低毒。本品 risk managers with two account manager to deal with the above key. Section I of chapter III risk management requirements pre-loan investigation pre-loan investigation should double handle. Pre-loan investigation dominated by field investigations on the ground, while utilizing credit enquiries, telephone enquiries, bank information system query-related personnel, and so on. Interview system of Bank's strict application of the system of personal credit business interview. Investigators should work with borrowers, to the repayment or the guarantor credit business, such as parties and the spouse of confirmed acts such as loans, guarantees, verification of its authenticity and its rights and obligations in the credit business, retain these signed transcript of the interview, from the first step to prevent false loans and other business risks. Investigator should retain the borrower sign a personal loan application, loan applications should be clearly the amount, purpose, duration and other information. Investigators should follow the practice for information collection and verification of data authenticity it carefully, and keep copies, photocopies must be checked against the original agreement, effectively preventing borrowers using false information to apply for credit. Income and occupation, and other key information to verify authenticity investigators should carefully verifying the borrower's income. To income as the main source of repayment, subject to proof of income is required, but should also audit payroll flowing water, and staff than the peer confirmed the authenticity of the same type; operating income as the main source of repayment, and should refer to the working capital loans required to verify real incomes, accuracy; guard no ability to repay or guarantee of the ability of the borrower, guarantor to obtain credit. Given that some products for an object to have a specific professional restrictions 实验用大白鼠 对皮肤和粘膜有刺激作用。高浓度有麻醉作用， 麻醉浓度与致死浓度相差不多。高剂量时尚可有肝脏毒性。大鼠吸入590mg/m^3，历3小时，眼脸及鼻粘膜发红;吸入>147750mg/m^3，出现角膜水肿和混浊、流涎、流涕和鼻出血。 大鼠、豚鼠、兔及猫在50mg/L浓度下3小时,部分动物侧倒;100mg/L下出现深度麻醉，部分动物在暴露1,4.5小时后死亡;200mg/L下1小时即出现麻醉, 如长时间作用，可引起死亡。大鼠吸入浓度>14000mg/m^3,出现睡眠，强直,进入深昏迷，抽搐,并有癫痫样脑电波。对麻醉作用，动物反复吸入后可出现耐受性。动物一次接触高剂量或反复接触,可出现肝脂肪浸润及细胞溶解。 经口染毒，可引起胃出血和溃疡。 20%水溶液直接涂于兔皮肤可引起中度皮肤刺激,50% 水溶液可引起严重的腐蚀性损害。 20%水溶液用于兔眼可引起严重的角膜炎。 THF接触空气时形成爆炸过氧化物，可增加THF的刺激作用。 国外报道引起人麻醉的浓度为73800mg/m^3。人的嗅觉阈为88.5mg/m^3。 健康危害 毒性:吸入为微毒类，经口属低毒类。 急性毒性:人经口最小致死浓度50mg/kg。 致突变性:DNA损伤:哺乳动物淋巴细胞100mmol/L。 侵入途径:吸入、食入、经皮吸收。 健康危害:本品具有刺激和麻醉作用。吸入后引起上呼吸道刺激、恶心、头晕、头痛和中枢神经系统抑制。能引起肝、肾损害。液体或高浓度蒸气对眼有刺激性。女性长期接触，可导致不孕。 临床表现 高浓度吸入后可出现头晕、头痛、胸闷、胸痛、咳嗽、乏力、口干、恶心、呕吐等症状,可伴有眼刺激症状。部分患者可发生肝功能障碍。尿中THF浓度与环境中的THF浓度相关，为职业接触THF的有用的生物标志物。 处理 risk managers with two account manager to deal with the above key. Section I of chapter III risk management requirements pre-loan investigation pre-loan investigation should double handle. Pre-loan investigation dominated by field investigations on the ground, while utilizing credit enquiries, telephone enquiries, bank information system query-related personnel, and so on. Interview system of Bank's strict application of the system of personal credit business interview. Investigators should work with borrowers, to the repayment or the guarantor credit business, such as parties and the spouse of confirmed acts such as loans, guarantees, verification of its authenticity and its rights and obligations in the credit business, retain these signed transcript of the interview, from the first step to prevent false loans and other business risks. Investigator should retain the borrower sign a personal loan application, loan applications should be clearly the amount, purpose, duration and other information. Investigators should follow the practice for information collection and verification of data authenticity it carefully, and keep copies, photocopies must be checked against the original agreement, effectively preventing borrowers using false information to apply for credit. Income and occupation, and other key information to verify authenticity investigators should carefully verifying the borrower's income. To income as the main source of repayment, subject to proof of income is required, but should also audit payroll flowing water, and staff than the peer confirmed the authenticity of the same type; operating income as the main source of repayment, and should refer to the working capital loans required to verify real incomes, accuracy; guard no ability to repay or guarantee of the ability of the borrower, guarantor to obtain credit. Given that some products for an object to have a specific professional restrictions 立即脱离事故现场至空气新鲜处。皮肤或眼污染时立即用清水冲洗。 对症处理。 标准 车间空气卫生标准: 中国MAC 300 mg/m3 (1996) 美国ACGIH TLV-STEL 737 mg/m3 (250 ppm) 美国ACGIH TLV-TWA 590 mg/m3 (200 ppm) 美国MSHA STANDARD-air: TWA 200 ppm (590 mg/m3) 美国OSHA PEL (所有行业): 8H TWA 200 ppm (590 mg/m3) 澳大利亚: TWA 200 ppm (590 mg/m3), STEL 250 ppm (735 mg/m3) JAN 1993; 比利时: TWA 200 ppm (590 mg/m3), STEL 250 ppm (738 mg/m3) JAN 1993; 丹麦: TWA 200 ppm (590 mg/m3) JAN 1993; 芬兰: TWA 100 ppm (290 mg/m3), STEL 150 ppm (440 mg/m3) JAN 1993; 法国: TWA 200 ppm (590 mg/m3) JAN 1993; 德国: TWA 200 ppm (590 mg/m3) JAN 1993; 匈牙利: TWA 200 mg/m3, STEL 400 mg/m3 JAN 1993; 日本: TWA 200 ppm (590 mg/m3) JAN 1993; 荷兰: TWA 200 ppm (590 mg/m3) JAN 1993; 菲律宾: TWA 200 ppm (590 mg/m3) JAN 1993; 俄罗斯: TWA 200 ppm, STEL 100 mg/m3 JAN 1993; 瑞典: TWA 100 ppm (300 mg/m3), STEL 150 ppm (450 mg/m3) JAN 1993; 瑞士: TWA 200 ppm (590 mg/m3), STEL 1000 ppm JAN 1993; 土耳其: TWA 200 ppm (590 mg/m3) JAN 1993; 英国: TWA 200 ppm (590 mg/m3), STEL 250 ppm JAN 1993; 保加利亚，哥伦比亚，约旦，韩国参照美国美国ACGIH TLV; 新西兰，新加坡，越南参照美国美国ACGIH TLV 危规:DOT-HAZARD: 3; LABEL: FLAMMABLE LIQUID risk managers with two account manager to deal with the above key. Section I of chapter III risk management requirements pre-loan investigation pre-loan investigation should double handle. Pre-loan investigation dominated by field investigations on the ground, while utilizing credit enquiries, telephone enquiries, bank information system query-related personnel, and so on. Interview system of Bank's strict application of the system of personal credit business interview. Investigators should work with borrowers, to the repayment or the guarantor credit business, such as parties and the spouse of confirmed acts such as loans, guarantees, verification of its authenticity and its rights and obligations in the credit business, retain these signed transcript of the interview, from the first step to prevent false loans and other business risks. Investigator should retain the borrower sign a personal loan application, loan applications should be clearly the amount, purpose, duration and other information. Investigators should follow the practice for information collection and verification of data authenticity it carefully, and keep copies, photocopies must be checked against the original agreement, effectively preventing borrowers using false information to apply for credit. Income and occupation, and other key information to verify authenticity investigators should carefully verifying the borrower's income. To income as the main source of repayment, subject to proof of income is required, but should also audit payroll flowing water, and staff than the peer confirmed the authenticity of the same type; operating income as the main source of repayment, and should refer to the working capital loans required to verify real incomes, accuracy; guard no ability to repay or guarantee of the ability of the borrower, guarantor to obtain credit. Given that some products for an object to have a specific professional restrictions