Potassium tetraborate tetrahydrate - ≥99% , CAS No.12045-78-2

CAS: 12045-78-2 Cat. No.: P305581 Molecular Weight: 305.5 EC Number: 601-707-2
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
Potassium Tetraborate Tetrahydrate | Potassium biborate
Storage
Room temperature
Shipped In
Normal
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Size
Status
Price
Qty
25g
P305581-25g
1
$9.90
100g
P305581-100g
2

$11.90

$13.90
Save $2.00 (14.39%)
500g
P305581-500g
3

$45.90

$53.90
Save $8.00 (14.84%)
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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

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

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Literature proof

Cited in 11 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Potassium tetraborate tetrahydrate is a hydrated tetraborate salt of potassium. Its crystal structure has been examined. Its crystals belong to the orthorhombic crystal system with space group P212121. Aqueous solution of potassium tetraborate tetrahydrate on evaporation affords single crystals.

Specifications

Synonyms
Potassium Tetraborate Tetrahydrate | Potassium biborate
Specifications & Purity
≥99%
Storage
Room temperature
Shipped In
Normal
Purity
≥99%
Names and Identifiers
WGK Germany 3
Molecular Weight 305.5

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.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

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.

14 results found

Lot NumberCertificate TypeDateItem
E2612027Certificate of AnalysisMay 20, 2026 P305581
I2127239Certificate of AnalysisJul 10, 2025 P305581
D2530254Certificate of AnalysisApr 25, 2024 P305581
C2609068Certificate of AnalysisDec 13, 2022 P305581
D2424063Certificate of AnalysisDec 13, 2022 P305581
D2630513Certificate of AnalysisDec 13, 2022 P305581
E2310830Certificate of AnalysisDec 13, 2022 P305581
E2310839Certificate of AnalysisDec 13, 2022 P305581
E2622003Certificate of AnalysisDec 13, 2022 P305581
H2515089Certificate of AnalysisDec 13, 2022 P305581
E2516104Certificate of AnalysisApr 09, 2021 P305581
F2511054Certificate of AnalysisApr 09, 2021 P305581
G2409109Certificate of AnalysisApr 09, 2021 P305581
K2221172Certificate of AnalysisApr 09, 2021 P305581

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Chemical and Physical Properties
SolubilitySoluble in water
Citations of This Product
References
1. Xiaolin Sun, Kai Zhao, Zhiqiang Liu, Zhonghan Feng, Zihao Wang, Liang Cui, Jingquan Liu.  (2022)  Facile electrodeposition of Ni3(BO3)2 nanospheres on Ti mesh for high-performance asymmetric supercapacitors.  Journal of Energy Storage,      [PMID:] [10.1016/j.est.2022.105763]
2. Xue-Jiao Zhao, Na Wang, Ming-Jun Zhang, Sha-Sha Liu, Hui Yu, Mo-Huan Tang, Zhao-Ying Liu.  (2020)  Simultaneous determination of five amino acid neurotransmitters in rat and porcine blood and brain by two-dimensional liquid chromatography.  JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES,      [PMID:33387860] [10.1016/j.jchromb.2020.122507]
3. Faizal Soyekwo, Changkun Liu, Hao Wen, Yunxia Hu.  (2019)  Construction of an electroneutral zinc incorporated polymer network nanocomposite membrane with enhanced selectivity for salt/dye separation.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2019.122560]
4. Faizal Soyekwo, Qiugen Zhang, Yan Qu, Zhen Lin, Xiaodong Wu, Aimei Zhu, Qinglin Liu.  (2018)  Tetraamminezinc complex integrated interpenetrating polymer network nanocomposite membrane for phosphorous recovery.  AICHE JOURNAL,  65  (2): (755-765).  [PMID:] [10.1002/aic.16463]
5. Yangqin Gao, Yandong Li, Guoqing Yang, Songsong Li, Nan Xiao, Boran Xu, Shuang Liu, Ping Qiu, Shijie Hao, Lei Ge.  (2018)  Fe2TiO5 as an Efficient Co-catalyst To Improve the Photoelectrochemical Water Splitting Performance of BiVO4.  ACS Applied Materials & Interfaces,      [PMID:30346126] [10.1021/acsami.8b14141]
6. Faizal Soyekwo, Qiugen Zhang, Lin Zhen, Lina Ning, Aimei Zhu, Qinglin Liu.  (2017)  Borate crosslinking of polydopamine grafted carbon nanotubes membranes for protein separation.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2017.12.079]
7. Heng-Xiang Li, Wen-Jing Shi, Xiaohua Zhang, Ying Liu, Ling-Yang Liu, Jianmin Dou.  (2024)  Enhancement of zinc-ion storage capability by synergistic effects on dual-ion adsorption in hierarchical porous carbon for high-performance aqueous zinc-ion hybrid capacitors.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:38670013] [10.1016/j.jcis.2024.04.119]
8. Qixian Xie, Dan Ren, Lichen Bai, Rile Ge, Wenhui Zhou, Lu Bai, Wei Xie, Junhu Wang, Michael Grätzel, Jingshan Luo.  (2022)  Investigation of nickel iron layered double hydroxide for water oxidation in different pH electrolytes.  CHINESE JOURNAL OF CATALYSIS,      [PMID:] [10.1016/S1872-2067(22)64190-1]
9. Jie Shen, Guozhen Liu, Yufan Ji, Quan Liu, Long Cheng, Kecheng Guan, Mengchen Zhang, Gongping Liu, Jie Xiong, Jian Yang, Wanqin Jin.  (2018)  2D MXene Nanofilms with Tunable Gas Transport Channels.  ADVANCED FUNCTIONAL MATERIALS,  28  (31): (1801511).  [PMID:] [10.1002/adfm.201801511]
10. Qiang Zhao, Genyan Hao, Wen Yuan, Nan Ma, Jinping Li.  (2014)  Novel copper oxides oxygen evolving catalyst in situ for electrocatalytic water splitting.  ELECTROCHIMICA ACTA,      [PMID:] [10.1016/j.electacta.2014.11.079]
11. Ai Xin, Zhang Xiao-Fei, Xu Yu-Lin, Li Ya-Fei, Zuo Xiao-Hua, Zhang Xiao-Lei, Wei Jie, Xie Quan-Wei.  (2026)  Neutralized Fe–Cr redox flow battery with symmetric DTPA-Ligand electrolytes: mitigating cross-contamination and enhancing cycling stability.  JOURNAL OF MATERIALS SCIENCE,      [PMID:] [10.1007/s10853-026-12186-0]
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