Sodium arsenate dibasic heptahydrate - ACS, ≥98% , CAS No.10048-95-0

CAS: 10048-95-0 Cat. No.: S475248 Molecular Weight: 312.01 EC Number: 677-900-0 PubChem CID: 61460
AVAILABLE TO ORDER
GRADE & PURITY ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥98%
Synonyms
SODIUM ARSENATE, HEPTAHYDRATE | Sodium arsenate, dibasic, heptahydrate | Dibasic sodium arsenate heptahydrate | Sodium orthoarsenate heptahydrate | Sodium acid arsenate, heptahydrate | Sodium arsenate heptahydrate | Disodium monohydrogen arsenate heptahyd
Storage
Argon charged
Shipped In
FedEx DG Service
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
S475248-1g
1
$23.90
5g
S475248-5g
1
$79.90
Enter a quantity for the sizes you want to add.
🧪

Why this grade

ACS, ≥98% ACS for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Argon charged Ships FedEx DG Service Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 39 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
SODIUM ARSENATE, HEPTAHYDRATE | Sodium arsenate, dibasic, heptahydrate | Dibasic sodium arsenate heptahydrate | Sodium orthoarsenate heptahydrate | Sodium acid arsenate, heptahydrate | Sodium arsenate heptahydrate | Disodium monohydrogen arsenate heptahyd
Specifications & Purity
ACS, ≥98%
Storage
Argon charged
Shipped In
FedEx DG Service
This product requires cold chain shipping. Ground and other economy services are not available.
Grade
ACS
Purity
≥98%
Names and Identifiers
Pubchem Sid504753780
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504753780
PH8.5-9.0 (25 °C, 50 g/L)
Canonical SmilesO.O.O.O.O.O.O.O[As](=O)([O-])[O-].[Na+].[Na+]
IUPAC Namedisodium;hydrogen arsorate;heptahydrate
InChIKeyKOLXPEJIBITWIQ-UHFFFAOYSA-L
INCHI1S/AsH3O4.2Na.7H2O/c2-1(3,4)5;;;;;;;;;/h(H3,2,3,4,5);;;7*1H2/q;2*+1;;;;;;;/p-2
Isomeric SMILES O.O.O.O.O.O.O.O[As](=O)([O-])[O-].[Na+].[Na+]
WGK Germany 3
RTECS CG0900000
PubChem CID 61460
UN Number 1685
Packing Group II
Molecular Weight 312.01

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
ClassAlkali metal oxoanionic compounds
SubclassAlkali metal arsenates
Intermediate Tree Nodes Not available
Direct ParentAlkali metal arsenates
Alternative Parents Miscellaneous arsenates  Metalloid salts  Inorganic sodium salts  Inorganic oxides  Inorganic arsenic compounds  
Molecular FrameworkNot available
Substituents Arsenate - Alkali metal arsenate - Inorganic sodium salt - Inorganic oxide - Inorganic salt - Inorganic metalloid salt - Inorganic arsenic compound
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal arsenates. These are inorganic compounds in which the largest oxoanion is arsenate, and in which the heaviest atom not in an oxoanion is an alkali metal.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

26 results found

Lot NumberCertificate TypeDateItem
E2618461Certificate of AnalysisMay 09, 2026 S475248
E2618460Certificate of AnalysisMay 09, 2026 S475248
E2618459Certificate of AnalysisMay 09, 2026 S475248
A2604558Certificate of AnalysisDec 25, 2025 S475248
A2604543Certificate of AnalysisDec 25, 2025 S475248
E2520504Certificate of AnalysisMay 15, 2025 S475248
E2520489Certificate of AnalysisMay 15, 2025 S475248
K2427704Certificate of AnalysisNov 16, 2024 S475248
K2427663Certificate of AnalysisNov 16, 2024 S475248
K2411017Certificate of AnalysisAug 01, 2024 S475248
H2412303Certificate of AnalysisAug 01, 2024 S475248
H2412301Certificate of AnalysisAug 01, 2024 S475248
G2426039Certificate of AnalysisMay 31, 2024 S475248
F2411450Certificate of AnalysisMay 31, 2024 S475248
F2411449Certificate of AnalysisMay 31, 2024 S475248
E2411365Certificate of AnalysisApr 29, 2024 S475248
E2411364Certificate of AnalysisApr 29, 2024 S475248
C2419357Certificate of AnalysisMar 13, 2024 S475248
C2419358Certificate of AnalysisMar 13, 2024 S475248
B2401220Certificate of AnalysisJan 25, 2024 S475248
B2401221Certificate of AnalysisJan 25, 2024 S475248
B2401223Certificate of AnalysisJan 25, 2024 S475248
B2401222Certificate of AnalysisJan 25, 2024 S475248
K2321283Certificate of AnalysisNov 16, 2023 S475248
K2321284Certificate of AnalysisNov 16, 2023 S475248
E2305650Certificate of AnalysisApr 01, 2023 S475248

Show more ⌵

Chemical and Physical Properties
SolubilitySoluble in water and glycerol.
SensitivityMoisture sensitive
Melt Point(°C)180°C
Molecular Weight312.010 g/mol
XLogP3
Hydrogen Bond Donor Count8
Hydrogen Bond Acceptor Count11
Rotatable Bond Count0
Exact Mass311.963 Da
Monoisotopic Mass311.963 Da
Topological Polar Surface Area90.400 Ų
Heavy Atom Count14
Formal Charge0
Complexity46.500
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count10
Citations of This Product
References
1. Yulu Ai, Hongping Chen, Mengfang Chen, Wenying Zhang, Yufei Jia, Lu Han, Jing Li, Yongming Luo.  (2023)  Characteristics and mechanism of effectively capturing arsenate by sulfate intercalated and self-doping layered double hydroxide derived from field acid mine drainage.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2023.125763]
2. Huiping Zeng, Weihua Zhao, Siqi Sun, Xiao Sun, Yuwei Zeng, Ruixia Hao, Jie Zhang, Dong Li.  (2023)  Facile preparation of maghemite based on iron sludge for arsenic removal from water.  SCIENCE OF THE TOTAL ENVIRONMENT,      [PMID:37806569] [10.1016/j.scitotenv.2023.167575]
3. Hong-Yan Wang, Amit Kumar, Jin Li, Peng Chen, Zhi-Guo Yu, Guo-Xin Sun.  (2023)  The adsorption behavior and mechanism for arsenate by lanthanum-loaded biochar with different modification methods.  Environmental Technology & Innovation,      [PMID:] [10.1016/j.eti.2023.103344]
4. Zibin Pan, Rongrong Xie, Zuliang Chen.  (2023)  One-step simultaneous biomass synthesis of iron nanoparticles using tea extracts for the removal of metal(loid)s in acid mine drainage.  CHEMOSPHERE,      [PMID:37391078] [10.1016/j.chemosphere.2023.139366]
5. Jin Qi, Dong Yingbo, Pan Hanlin, Lin Hai.  (2023)  Remediation performance of As-contaminated water and soil using a novel Fe–Mn bimetallic (oxyhydr)oxide coated on natural magnetite.  ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,  30  (23): (64233-64245).  [PMID:37061639] [10.1007/s11356-023-26726-7]
6. Varney Edwin Johnson, Qi Liao, Bob Wisdom Jallawide, Richmond Anaman, Charles Amanze, Peicheng Huang, Wei Cao, Chunlian Ding, Yan Shi.  (2023)  Simultaneous removal of As(V) and Pb(II) using highly-efficient modified dehydrated biochar made from banana peel via hydrothermal synthesis.  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,      [PMID:] [10.1016/j.colsurfa.2023.131115]
7. Lina Xu, Zhu Shu, Lingling Feng, Jun Zhou, Tiantian Li, Zhengliang Zhao, Wenbin Wang.  (2022)  Fresh biomass derived biochar with high-load zero-valent iron prepared in one step for efficient arsenic removal.  Journal of Cleaner Production,      [PMID:] [10.1016/j.jclepro.2022.131616]
8. Rao Honghong, Li Jianying, Luo Mingyue, Zhang Kehui, Gou Hao, Liu Haixia, Xue Zhonghua.  (2022)  A label-free and modification-free ratiometric electrochemical strategy for enhanced natural enzyme detection using a bare electrode and nanozymes system.  ANALYTICAL AND BIOANALYTICAL CHEMISTRY,  414  (9): (2991-3003).  [PMID:35106612] [10.1007/s00216-022-03932-9]
9. Siqi Liu, Andrey M. Kuznetsov, Weiqing Han, Alexei N. Masliy, Gregory V. Korshin.  (2022)  Removal of dimethylarsinic acid (DMA) in the Fe/C system: roles of Fe(II) release, DMA/Fe(II) and DMA/Fe(III) complexation.  WATER RESEARCH,      [PMID:35149364] [10.1016/j.watres.2022.118093]
10. Tuo Zhang, Xinyi Chen, Yu Wang, Lijuan Li, Yuanyuan Sun, Yanan Wang, Xibai Zeng.  (2021)  The stability of poorly crystalline arsenical ferrihydrite after long-term soil suspension incubation.  CHEMOSPHERE,      [PMID:34767854] [10.1016/j.chemosphere.2021.132844]
11. Xin Sun, Minlin Mao, Kaibin Lu, Qimei Hu, Weizhen Liu, Zhang Lin.  (2021)  One-step removal of high-concentration arsenic from wastewater to form Johnbaumite using arsenic-bearing gypsum.  JOURNAL OF HAZARDOUS MATERIALS,      [PMID:34753651] [10.1016/j.jhazmat.2021.127585]
12. Tao Huang, Longfei Liu, Shuwen Zhang.  (2021)  Electrokinetic removals of arsenate and arsenite from the aqueous environment by a fluidized bed of superparamagnetic iron oxide nanoparticle-coated pyrite microelectrodes.  SEPARATION SCIENCE AND TECHNOLOGY,      [PMID:] [10.1080/01496395.2019.1708113]
13. Zhixu Lu, Xuezhu Li, Xianjin Qi.  (2021)  Cobalt-loaded resin can effectively remove arsenic in wastewater.  Environmental Technology & Innovation,      [PMID:] [10.1016/j.eti.2021.101354]
14. Caiying Zhang, Xueru Wang, Shaoxing Pi, Zejing Wei, Chang Wang, Fan Yang, Guyue Li, Gaohui Nie, Guoliang Hu.  (2020)  Cadmium and molybdenum co-exposure triggers autophagy via CYP450s/ROS pathway in duck renal tubular epithelial cells.  SCIENCE OF THE TOTAL ENVIRONMENT,      [PMID:33243500] [10.1016/j.scitotenv.2020.143570]
15. Xing Gao, Yutao Peng, Lili Guo, Qiong Wang, Chung-Yu Guan, Fan Yang, Qing Chen.  (2020)  Arsenic adsorption on layered double hydroxides biochars and their amended red and calcareous soils.  JOURNAL OF ENVIRONMENTAL MANAGEMENT,      [PMID:32778322] [10.1016/j.jenvman.2020.111045]
16. Yuanjun Tang, Yingying Xie, Guining Lu, Han Ye, Zhi Dang, Zining Wen, Xueqin Tao, Chunsheng Xie, Xiaoyun Yi.  (2020)  Arsenic behavior during gallic acid-induced redox transformation of jarosite under acidic conditions.  CHEMOSPHERE,      [PMID:32388258] [10.1016/j.chemosphere.2020.126938]
17. Jing Su, Tao Lyu, Hao Yi, Lei Bi, Gang Pan.  (2019)  Superior arsenate adsorption and comprehensive investigation of adsorption mechanism on novel Mn-doped La2O2CO3 composites.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2019.123623]
18. Yingchao Li, Maodan Xu, Huanshun Yin, Weijie Shi, Geoffrey I.N. Waterhouse, Houshen Li, Shiyun Ai.  (2019)  Yolk-shell Fe3O4 nanoparticles loaded on persimmon-derived porous carbon for supercapacitor assembly and As (V) removal.  JOURNAL OF ALLOYS AND COMPOUNDS,      [PMID:] [10.1016/j.jallcom.2019.151887]
19. Xiaohui Dai, Shuxin Zhang, Geoffrey I.N. Waterhouse, Hai Fan, Shiyun Ai.  (2018)  Recyclable polyvinyl alcohol sponge containing flower-like layered double hydroxide microspheres for efficient removal of As(V) anions and anionic dyes from water.  JOURNAL OF HAZARDOUS MATERIALS,      [PMID:30597373] [10.1016/j.jhazmat.2018.12.092]
20. Junhui Liu, Long Kong, Xueqiong Huang, Min Liu, Liang Li.  (2018)  Removal of arsenic(V) from aqueous solutions using sulfur-doped Fe3O4 nanoparticles.  RSC Advances,  (71): (40804-40812).  [PMID:35557881] [10.1039/C8RA08699K]
21. Lijin Huang, Jiayu Cai, Man He, Beibei Chen, Bin Hu.  (2018)  Room-Temperature Synthesis of Magnetic Metal–Organic Frameworks Composites in Water for Efficient Removal of Methylene Blue and As(V).  INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,      [PMID:] [10.1021/acs.iecr.7b05294]
22. Zhou Fang, Ying Su, Yaqin Yu, Huaijian Zhang, Xintian Qian.  (2024)  Long-term deployment of commonly used DGT devices for trace element measurement across laboratory and field settings.  ANALYTICA CHIMICA ACTA,      [PMID:39396294] [10.1016/j.aca.2024.343230]
23. Ping Zhang, Dan Zou, Chunhua Dong, Feiping Zhao, Weichun Yang, Mengying Si, Zhihui Yang.  (2024)  Mechanism investigation of arsenic remediation in contaminated soil by Fe anode using the electrochemical method.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2024.113183]
24. Na Liu, Ruili Gao, Jingjing Guo, Longwei Fu, Bin Xue, Kun Ma, Chen Lin.  (2024)  Mechanisms of calcium-mediated As(V) immobilization by undissolved and dissolved biochar in saline-alkali environments.  JOURNAL OF ENVIRONMENTAL MANAGEMENT,      [PMID:39388816] [10.1016/j.jenvman.2024.122775]
25. Zhenlei Wang, Yinxing Zhao, Tingting Zhang, Sizhe Lai, Qiwu Zhang, Yunliang Zhao.  (2025)  Mechanochemical dolomite accurately modulating the activity of newly formed Fe-hydroxide for superior and stable arsenic removal.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2025.131901]
26. Ping Zhang, Feiping Zhao, Penggang Li, Junhao Zheng, Weichun Yang, Qingzhu Li, Zhihui Yang.  (2024)  Mn-assisted Fe-electrocoagulation strategy for enhanced efficient arsenic removal and its mechanism.  PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,      [PMID:] [10.1016/j.psep.2024.04.109]
27. Jiamei Zhu, Xueyan Dai, Yan Wang, Ting Cui, Bingyan Huang, Dianyun Wang, Wenjing Pu, Caiying Zhang.  (2024)  Molybdenum and cadmium co-induce apoptosis and ferroptosis through inhibiting Nrf2 signaling pathway in duck (Anas platyrhyncha) testes.  POULTRY SCIENCE,      [PMID:38537407] [10.1016/j.psj.2024.103653]
28. Menghuan Zhang, Yuanyuan Lu, Qingwen Lan, Yunying Fang, Tingting Ma, Shuang He, Boyi Liu, Xinqiang Liang.  (2025)  Paper-Based Electrochemical Approach for Highly Rapid and Sensitive Quantification of Inorganic Phosphate in Freshwater.  ACS ES&T Water,      [PMID:] [10.1021/acsestwater.4c01111]
29. Qiwei Sun, Huifen Yang, Xiaodi Feng, Tong Zhao.  (2024)  Removal and stabilization of As and Cd in water/soil using silicate-supported nano zero-valent iron composites: Preparation, behavior, mechanism and cost analysis.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2024.113618]
30. Sun Xiaolei, Li Qiao, Shen Jinyou, Han Weiqing, Li Jiansheng, Sun Xiuyun.  (2024)  Waste Control by Waste: Co-Treatment of Municipal Solid Waste Incineration Fly Ash and High Arsenic-Containing Wastewater.  Waste and Biomass Valorization,      [PMID:] [10.1007/s12649-024-02612-2]
31. Zichuan Liu, Xiaojun Chen, Zhigang Xia, Qi Wang, Jianyu Huang, Tao Wang, Bocheng Zhu, Bin Su.  (2023)  A self-powered electro-coagulation system afforded by flexible electromagnetic flag wind generators for efficient removal of arsenic from water.  Nano Energy,      [PMID:] [10.1016/j.nanoen.2023.108648]
32. Fanrong Zeng, Muhammad Mudassir Nazir, Temoor Ahmed, Muhammad Noman, Shafaqat Ali, Muhammad Rizwan, Mohammad Shah Alam, Jonas Lwalaba Wa Lwalaba, Guoping Zhang.  (2023)  Calcium and L-glutamate present the opposite role in managing arsenic in barley.  ENVIRONMENTAL POLLUTION,      [PMID:36702433] [10.1016/j.envpol.2023.121141]
33. Zibin Pan, Zhengxian Chen, Gary Owens, Zuliang Chen.  (2022)  Enhanced reactivity of bimetallic Fe/Cu-organic composite (Fe/Cu-OC) using biosynthesis with tea extract for As(V) removal.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2022.109227]
34. Liangtao Pu, Yeming Xu, Qiancheng Xia, Jie Ding, Yanfeng Wang, Chao Shan, Di Wu, Quanxing Zhang, Guandao Gao, Bingcai Pan.  (2020)  Ferroelectric membrane for water purification with arsenic as model pollutant.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2020.126426]
35. Rongming Xu, Qinghua Ji, Pin Zhao, Meipeng Jian, Chao Xiang, Chengzhi Hu, Gong Zhang, Chaochun Tang, Ruiping Liu, Xiwang Zhang, Jiuhui Qu.  (2020)  Hierarchically porous UiO-66 with tunable mesopores and oxygen vacancies for enhanced arsenic removal.  Journal of Materials Chemistry A,  (16): (7870-7879).  [PMID:] [10.1039/C9TA13747E]
36. Jingjing Yang, Tianxing Ma, Xiaoqin Li, Jingwei Tu, Zhi Dang, Chen Yang.  (2018)  Removal of Heavy Metals and Metalloids by Amino-Modified Biochar Supporting Nanoscale Zero-Valent Iron.  JOURNAL OF ENVIRONMENTAL QUALITY,  47  (5): (1196-1204).  [PMID:30272773] [10.2134/jeq2017.08.0320]
37. Weihua Zhao, Huiping Zeng, Qihan Wang, Xiao Sun, Yuwei Zeng, Dong Li, Jie Zhang.  (2025)  Utilization of waste iron sludge to achieve bifunctional magnetic and adsorptive cores for synthesizing magnetic chitosan microspheres: Arsenic decontamination and its mechanism.  PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,      [PMID:] [10.1016/j.psep.2025.107316]
38. Yuanyuan Lu, Tingting Ma, Menghuan Zhang, Qingwen Lan, Jiao Yang, Xinqiang Liang.  (2025)  Portable Paper-Based Sensing Platform for Rapid and Simultaneous Measurement of Environmental pH and Soluble Reactive Phosphorus.  ACS Sensors,      [PMID:40465862] [10.1021/acssensors.5c01052]
39. Chen JingQuan, Cheng WeiYi, Ren WeiYe, He LiTing, Wang Xiaoqi, Hong Xiujuan, Wang ChenLi, Wu Yajun, Bao Dandan, Wu Zhibing, Wei Yinghui, Piao Ji-Gang.  (2025)  Self-activated prodrug nanocomposites reprogramming lactic acid metabolism to initiate acidosis-endoplasmic reticulum stress cascade and potentiate immunogenic cell death for enhanced liver cancer therapy.  JOURNAL OF NANOBIOTECHNOLOGY,      [PMID:41327195] [10.1186/s12951-025-03874-1]
Solution Calculators
Reviews

Customer Reviews

Need help choosing the grade?

Our grade selection guide covers purity, stabilizer status, and application suitability for all variants in our catalog.

View ACS grade guide →

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.