筛选出 5 条数据

    品牌 产品 货期 价格 货号 规格 /
    染色剂和染料74-39-5

    CAS号:74-39-5

    品名:4-(4-硝基苯偶氮)间苯二酚4-(4-nitrophenylazo)resorcinol

    中文别名:镁试剂Ι;2,4-二羟基-4'-硝基偶氮苯;(对硝基苯偶氮)间苯二酚;偶氮紫;镁试剂I;镁试剂Ⅰ;镁试剂;

    英文别名:4-(4-Nitrophenylazo)resorcinol;1,3-Benzenediol,4-[(4-nitrophenyl)azo]-;4-(4-NITROPHENYLAZO)RESORCINOL;

    分子式:C12H9N3O4

    分子量:259.218

    精确质量:259.059

    Psa:111.0

    RTECS号:VH2810000

    UNII号:YND5ZT5BS3

    外观与性状:暗红色至棕色结晶粉末

    密度:1.45 g/cm3

    沸点:509.2ºC at 760 mmHg

    熔点:195-200°C (dec.)(lit.)

    折射率:1.665

    稳定性:Stable. Incompatible with strong oxidizing agents, strong bases.

    安全说明:S26-S36

    危险类别码:R36/38

    WGK Germany:3

    海关编码:2927000090

    危险品标志:Xi

    简介:Azoviolet(4-(4-Nitrophenylazo)resorcinol)isanorganiccompoundwiththechemicalformulaC12H9N3O4.ItisusedcommerciallyasavioletdyeandexperimentallyasapHindicator,turningblue-purpleinthepresenceofmagnesiumsaltinaslightlyalkaline,orbasic,environment.Azovioletmayalsobeusedtotestforthepresenceofammoniumions.Thecolorofammoniumchlorideorammoniumhydroxidesolutionwillvarydependingupontheconcentrationofazovioletused.

    用途:测定镁的试剂,吸附指示剂

     74-39-5 详细信息

    染色剂和染料

    CAS号:74-39-5

    品名:4-(4-硝基苯偶氮)间苯二酚4-(4-nitrophenylazo)resorcinol

    中文别名:镁试剂Ι;2,4-二羟基-4'-硝基偶氮苯;(对硝基苯偶氮)间苯二酚;偶氮紫;镁试剂I;镁试剂Ⅰ;镁试剂;

    英文别名:4-(4-Nitrophenylazo)resorcinol;1,3-Benzenediol,4-[(4-nitrophenyl)azo]-;4-(4-NITROPHENYLAZO)RESORCINOL;

    分子式:C12H9N3O4

    分子量:259.218

    精确质量:259.059

    Psa:111.0

    RTECS号:VH2810000

    UNII号:YND5ZT5BS3

    外观与性状:暗红色至棕色结晶粉末

    密度:1.45 g/cm3

    沸点:509.2ºC at 760 mmHg

    熔点:195-200°C (dec.)(lit.)

    折射率:1.665

    稳定性:Stable. Incompatible with strong oxidizing agents, strong bases.

    安全说明:S26-S36

    危险类别码:R36/38

    WGK Germany:3

    海关编码:2927000090

    危险品标志:Xi

    简介:Azoviolet(4-(4-Nitrophenylazo)resorcinol)isanorganiccompoundwiththechemicalformulaC12H9N3O4.ItisusedcommerciallyasavioletdyeandexperimentallyasapHindicator,turningblue-purpleinthepresenceofmagnesiumsaltinaslightlyalkaline,orbasic,environment.Azovioletmayalsobeusedtotestforthepresenceofammoniumions.Thecolorofammoniumchlorideorammoniumhydroxidesolutionwillvarydependingupontheconcentrationofazovioletused.

    用途:测定镁的试剂,吸附指示剂

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    染色剂和染料74-39-5
    罗恩 偶氮紫指示剂 4-(4-nitrophenylazo)resorcin... 当天发货

     225.00
    R050695 醇溶液0.1% (w/v)
    阿拉丁 偶氮紫指示剂 AzoVioletIndicato 期货,请咨询

     257.90
    A196528 0.1% (w/v)AlcoholicSolution
    源叶 偶氮紫指示剂 AzoVioletIndicato 期货,请咨询

     257.00
    V33379 0.1% (w/v)AlcoholicSolution
    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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