筛选出 2 条数据

    品牌 产品 货期 价格 货号 规格 /
    生物缓冲液7365-45-9

    CAS号:7365-45-9

    品名:4-羟乙基哌嗪乙磺酸2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonicacid

    中文别名:N-(2-羟乙基)哌嗪-N'-2-乙烷磺酸;4-(2-羟乙基)-1-哌嗪基]乙磺酸;N-2-羟乙基哌嗪-N'-2-乙磺酸;N-2-羟乙基哌嗪-N'-2-乙磺酸(HEPES);4-(2-羟乙基)-1-哌嗪乙磺酸;羟乙基哌嗪乙磺酸;N-(2-羟乙基)哌嗪-N’-2-乙烷磺酸;

    英文别名:GOOD'SBUFFER;HEPES.1/2Na;EIThydrobromide;HEPES,1Msolution;hepesfreeacid;HEPESBUFFERPH8.0;HEPES;hepessolution;

    分子式:C8H18N2O4S

    分子量:238.305

    精确质量:238.099

    Psa:89.46

    RTECS号:TL6809000

    MDL号:MFCD00006158

    外观与性状:白色结晶粉末

    密度:1.07g/mLat 20°C

    熔点:234-238 °C

    折射率:n20/D 1.339

    稳定性:Stable. Combustible. Incompatible with strong oxidizing agents. Protect from moisture.

    储存条件:2-8ºC

    安全说明:S24/25-S22-S36-S26

    危险类别码:R36/37/38

    WGK Germany:1

    海关编码:29335995

    危险品标志:Xi

    简介:HEPES(4-(2-hydroxyethyl)-1-piperazineethanesulfonicacid)isazwitterionicorganicchemicalbufferingagent;oneofthetwentyGood'sbuffers.HEPESiswidelyusedincellculture,largelybecauseitisbetteratmaintainingphysiologicalpHdespitechangesincarbondioxideconcentration(producedbycellularrespiration)whencomparedtobicarbonatebuffers,whicharealsocommonlyusedincellculture.Thedissociationofwaterdecreaseswithfallingtemperature,butthedissociationconstants(pK)ofmanyotherbuffersdonotchangemuchwithtemperature.HEPESislikewaterinthatitsdissociationdecreasesasthetemperaturedecreases.ThismakesHEPESamoreeffectivebufferingagentformaintainingenzymestructureandfunctionatlowtemperatures.Lepe-Zunigaetal.reportedaphototoxicityofHEPESwhenexposedtoambientlightbytheproductionofhydrogenperoxide,whichisnotaprobleminbicarbonate-basedcellculturebuffers.ItisthereforestronglyadvisedtokeepHEPES-containingsolutionsindarknessasmuchaspossible.

    用途:本品是一种氢离子缓冲剂,能较长时间控制恒定的pH范围。

     7365-45-9 详细信息

    生物缓冲液

    CAS号:7365-45-9

    品名:4-羟乙基哌嗪乙磺酸2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonicacid

    中文别名:N-(2-羟乙基)哌嗪-N'-2-乙烷磺酸;4-(2-羟乙基)-1-哌嗪基]乙磺酸;N-2-羟乙基哌嗪-N'-2-乙磺酸;N-2-羟乙基哌嗪-N'-2-乙磺酸(HEPES);4-(2-羟乙基)-1-哌嗪乙磺酸;羟乙基哌嗪乙磺酸;N-(2-羟乙基)哌嗪-N’-2-乙烷磺酸;

    英文别名:GOOD'SBUFFER;HEPES.1/2Na;EIThydrobromide;HEPES,1Msolution;hepesfreeacid;HEPESBUFFERPH8.0;HEPES;hepessolution;

    分子式:C8H18N2O4S

    分子量:238.305

    精确质量:238.099

    Psa:89.46

    RTECS号:TL6809000

    MDL号:MFCD00006158

    外观与性状:白色结晶粉末

    密度:1.07g/mLat 20°C

    熔点:234-238 °C

    折射率:n20/D 1.339

    稳定性:Stable. Combustible. Incompatible with strong oxidizing agents. Protect from moisture.

    储存条件:2-8ºC

    安全说明:S24/25-S22-S36-S26

    危险类别码:R36/37/38

    WGK Germany:1

    海关编码:29335995

    危险品标志:Xi

    简介:HEPES(4-(2-hydroxyethyl)-1-piperazineethanesulfonicacid)isazwitterionicorganicchemicalbufferingagent;oneofthetwentyGood'sbuffers.HEPESiswidelyusedincellculture,largelybecauseitisbetteratmaintainingphysiologicalpHdespitechangesincarbondioxideconcentration(producedbycellularrespiration)whencomparedtobicarbonatebuffers,whicharealsocommonlyusedincellculture.Thedissociationofwaterdecreaseswithfallingtemperature,butthedissociationconstants(pK)ofmanyotherbuffersdonotchangemuchwithtemperature.HEPESislikewaterinthatitsdissociationdecreasesasthetemperaturedecreases.ThismakesHEPESamoreeffectivebufferingagentformaintainingenzymestructureandfunctionatlowtemperatures.Lepe-Zunigaetal.reportedaphototoxicityofHEPESwhenexposedtoambientlightbytheproductionofhydrogenperoxide,whichisnotaprobleminbicarbonate-basedcellculturebuffers.ItisthereforestronglyadvisedtokeepHEPES-containingsolutionsindarknessasmuchaspossible.

    用途:本品是一种氢离子缓冲剂,能较长时间控制恒定的pH范围。

    展开

    生物缓冲液7365-45-9
    Apollo HEPESbufferpH8.0(1M)ste... HEPESbufferpH8.0(1M)ste... 3-4周

     1870.00
    BIA6906 /
    生物缓冲液127-09-3

    CAS号:127-09-3

    品名:乙酸钠sodiumacetate

    中文别名:无水乙酸钠;无水醋酸钠;乙酸钠,醋酸钠;乙酸钠,无水;

    英文别名:aceticacidsodiumsalt;Aceticacid,sodiumsalt;Aceticacidsodiumsalt;Aceticacid,sodiumsalt;sodiumethanoate;Natriumacetat;Mettler-ToledoCalibrationsubstance;MAGGRAN(R)NA;NAACETATE;Sodiumacetate;

    分子式:C2H3NaO2

    分子量:82.0338

    精确质量:82.0031

    Psa:40.13

    RTECS号:AJ4300010

    BRN号:3595639

    EINECS号:204-823-8

    MDL号:MFCD00012459

    PubChem号:24899538

    外观与性状:白色粉末

    密度:1.01g/mLat 20°C

    沸点:117.1ºC at 760 mmHg

    熔点:&>300°C (dec.)(lit.)

    闪点:&>250°C

    折射率:1.464 (20ºC)

    稳定性:Stable. Incompatible with strong oxidizing agents, halogens. Moisture sensitive.

    储存条件:库房通风低温干燥,与氧化剂、酸类分开存放

    蒸汽压:13.9mmHg at 25°C

    安全说明:S22-S24/25

    WGK Germany:1

    海关编码:2915291000

    简介:SodiumAcetateisusedinthetextileindustrytoneutralizesulfuricacidwastestreams,andasaphotoresistwhileusinganilinedyes.SodiumAcetatemaybeaddedtofoodsasaseasoning.

    用途:用作有机合成的酯化剂以及摄影药品、医药、印染媒染剂、缓冲剂、化学试剂、肉类防腐、颜料、鞣革等许多方面。可用于制取各种化工产品,如呋喃丙烯酸、醋酸酯和氯乙酸等。该品作为调味料的缓冲剂,可缓和不良气味并防止变色,具有一定的防霉作用。亦可用作调味酱、酸菜、蛋黄酱、鱼糕、香肠、面包、粘糕等的酸味剂。与甲基纤维素、磷酸盐等混合,用于香肠、面包、粘糕等的保存。

     127-09-3 详细信息

    生物缓冲液

    CAS号:127-09-3

    品名:乙酸钠sodiumacetate

    中文别名:无水乙酸钠;无水醋酸钠;乙酸钠,醋酸钠;乙酸钠,无水;

    英文别名:aceticacidsodiumsalt;Aceticacid,sodiumsalt;Aceticacidsodiumsalt;Aceticacid,sodiumsalt;sodiumethanoate;Natriumacetat;Mettler-ToledoCalibrationsubstance;MAGGRAN(R)NA;NAACETATE;Sodiumacetate;

    分子式:C2H3NaO2

    分子量:82.0338

    精确质量:82.0031

    Psa:40.13

    RTECS号:AJ4300010

    BRN号:3595639

    EINECS号:204-823-8

    MDL号:MFCD00012459

    PubChem号:24899538

    外观与性状:白色粉末

    密度:1.01g/mLat 20°C

    沸点:117.1ºC at 760 mmHg

    熔点:&>300°C (dec.)(lit.)

    闪点:&>250°C

    折射率:1.464 (20ºC)

    稳定性:Stable. Incompatible with strong oxidizing agents, halogens. Moisture sensitive.

    储存条件:库房通风低温干燥,与氧化剂、酸类分开存放

    蒸汽压:13.9mmHg at 25°C

    安全说明:S22-S24/25

    WGK Germany:1

    海关编码:2915291000

    简介:SodiumAcetateisusedinthetextileindustrytoneutralizesulfuricacidwastestreams,andasaphotoresistwhileusinganilinedyes.SodiumAcetatemaybeaddedtofoodsasaseasoning.

    用途:用作有机合成的酯化剂以及摄影药品、医药、印染媒染剂、缓冲剂、化学试剂、肉类防腐、颜料、鞣革等许多方面。可用于制取各种化工产品,如呋喃丙烯酸、醋酸酯和氯乙酸等。该品作为调味料的缓冲剂,可缓和不良气味并防止变色,具有一定的防霉作用。亦可用作调味酱、酸菜、蛋黄酱、鱼糕、香肠、面包、粘糕等的酸味剂。与甲基纤维素、磷酸盐等混合,用于香肠、面包、粘糕等的保存。

    展开

    生物缓冲液127-09-3
    阿法埃莎 乙酸钠,3M水溶液,pH5.2,autocla... Sodiumacetate,3Maq.soln.... 现货 询价 J63560 /
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