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中文名稱: 無水亞硫酸鈉7757-83-7
其他中文名稱: 亞硫酸鈉;硫養(yǎng)粉;硫化石
英文名稱: Sodium sulfite anhydrous
其他英文名稱: Sulfurous acid disodium salt;Sodium sulfite;anhydrous sodium sulfite;disodium sulfite;Exsiccated sodium sulfite
產(chǎn)品規(guī)格: AR,97%
包裝:250克
號(hào):7757-83-7
Na2SO3=126.04
級(jí)別:AR
含量:≥97.0%
澄清度試驗(yàn):合格
硫代硫酸鹽:≤0.01%
氯化物:≤0.005%
砷:≤0.0001%
水不溶物:≤0.005%
酸性亞硫酸鹽:合格
鐵:≤0.0005%
游離堿:≤0.1%
重金屬:≤0.001%
無水亞硫酸鈉7757-83-7性狀:結(jié)晶結(jié)晶性粉末。有二氧化硫氣味。干燥時(shí)穩(wěn)定。對(duì)濕敏感。較結(jié)晶亞硫酸鈉穩(wěn)定,但久貯可氧化成硫酸鈉,加熱分解為硫酸鈉和硫化鈉。溶于水,溶于甘油,不溶于乙醇。水溶液呈堿性,pH約為9。半數(shù)致死量(大鼠,靜脈)115mg/kg。有刺激性。密度:2.633;熔點(diǎn):500°C。
用途:生化研究。制亞硫酸纖維素酯、*、有機(jī)化學(xué)藥品、漂白織物等, 還用作還原劑、防腐劑、去氯劑等
保存:RT,避光
常用規(guī)格:
1.優(yōu)級(jí)純或一級(jí)品(GR 精密分析和科學(xué)研究工作);
2.分析純或二級(jí)品(AR 重要分析和一般研究工作);
3.化學(xué)純或三級(jí)品(CP 工礦及學(xué)校一般化學(xué)實(shí)驗(yàn));
無水亞硫酸鈉7757-83-7主要優(yōu)級(jí)純、分級(jí)純和化學(xué)純3種:
(1)優(yōu)級(jí)純(GR:Guaranteed reagent),又稱一級(jí)品或保證試劑,99.8%,這種試劑純度zui高,雜質(zhì)含量zui低,適合于重要精密的分析工作和科學(xué)研究工作,使用綠色瓶簽。
(2)分析純(AR),又稱二級(jí)試劑,純度很高,99.7%,略次于優(yōu)級(jí)純,適合于重要分析及一般研究工作,使用紅色瓶簽。
(3)化學(xué)純(CP),又稱三級(jí)試劑,≥ 99.5%,純度與分析純相差較大,適用于工礦、學(xué)校一般分析工作。使用藍(lán)色(深藍(lán)色)標(biāo)簽。
(4)實(shí)驗(yàn)試劑(LR:Laboratory reagent),又稱四級(jí)試劑。
公司提供的*,貨源充足。嚴(yán)格的生產(chǎn)質(zhì)量控制體系,包括:優(yōu)級(jí)純,分析純,化學(xué)純,試劑級(jí),基準(zhǔn)試劑,實(shí)驗(yàn)純,教學(xué)試劑,高純?cè)噭?,色譜純,光譜純,電子純。各種包裝規(guī)格,并可提供包裝定制,咨詢訂購。
Annexin V-Cy5 Reage Annexin V-Cy5 Reage
Annexin V-PE Reage Annexin V-PE Reage
Annexin V-PE Reage Annexin V-PE Reage
Annexin V-PE-Cy5 Reage Annexin V-PE-Cy5 Reage
Annexin V-PE-Cy5 Reage Annexin V-PE-Cy5 Reage
DiaEasy Dialyzer (3 ml) Floating racks DiaEasy Dialyzer (3 ml) Floating racks
DiaEasy Dialyzer (3 ml) Floating racks DiaEasy Dialyzer (3 ml) Floating racks
DiaEasy Dialyzer (3 ml) Supporting trays DiaEasy Dialyzer (3 ml) Supporting trays
DiaEasy Dialyzer (3 ml) Supporting trays DiaEasy Dialyzer (3 ml) Supporting trays
DiaEasy Dialyzer (800 ul) Floating racks DiaEasy Dialyzer (800 ul) Floating racks
DiaEasy Dialyzer (800 ul) Floating racks DiaEasy Dialyzer (800 ul) Floating racks
DiaEasy Dialyzer (800 ul) Supporting trays DiaEasy Dialyzer (800 ul) Supporting trays
DiaEasy Dialyzer (800 ul) Supporting trays DiaEasy Dialyzer (800 ul) Supporting trays
DiaEasy Dialyzer (250 ul) Floating racks DiaEasy Dialyzer (250 ul) Floating racks
DiaEasy Dialyzer (250 ul) Floating racks DiaEasy Dialyzer (250 ul) Floating racks
DiaEasy Dialyzer (250 ul) Supporting trays DiaEasy Dialyzer (250 ul) Supporting trays
DiaEasy Dialyzer (250 ul) Supporting trays DiaEasy Dialyzer (250 ul) Supporting trays
EZAct Procathepsin Activation Buffer EZAct Procathepsin Activation Buffer
Prionex Prionex
Annexin V Binding Buffer, 1X Annexin V Binding Buffer, 1X
Dilution Buffer Dilution Buffer
Dilution Buffer Dilution Buffer
無水亞硫酸鈉7757-83-7Cell Lysis Buffer Cell Lysis Buffer
Cell Lysis Buffer Cell Lysis Buffer
Reaction Buffer, 2X 2X Reaction Buffer
Reaction Buffer, 2X 2X Reaction Buffer
Tris-HCl Solution (1.5 M, pH 8.8) Tris-HCl (pH 8.8)
Jurkat Cell Extract (Uninduced) Jurkat Cell Extract (Uninduced)
Jurkat Cell Extract (Uninduced) Jurkat Cell Extract (Uninduced)
Jurkat Cell Extract (Induced) Jurkat Cell Extract (Induced)
Jurkat Cell Extract (Induced) Jurkat Cell Extract (Induced)
Yeast Mitochondria (Pichia pastoris) Yeast Mitochondria (Pichia pastoris)
Yeast Mitochondria (Pichia pastoris) Yeast Mitochondria (Pichia pastoris)