CAS #:

Linear Formula:

(NH4)B5O8 • 4H2O

MDL Number:


EC No.:



(2N) 99% Ammonium Pentaborate Tetrahydrate
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(3N) 99.9% Ammonium Pentaborate Tetrahydrate
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(4N) 99.99% Ammonium Pentaborate Tetrahydrate
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(5N) 99.999% Ammonium Pentaborate Tetrahydrate
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Ammonium Pentaborate Tetrahydrate Properties (Theoretical)

Compound Formula B5H12NO12
Molecular Weight 272.141
Appearance White powder
Melting Point 110 °C
Boiling Point N/A
Density 1.58 g/cm3
Solubility in H2O Soluble
Exact Mass 273.082 g/mol
Monoisotopic Mass 273.082 g/mol

Ammonium Pentaborate Tetrahydrate Health & Safety Information

Signal Word Warning
Hazard Statements H315-H319-H335
Hazard Codes Xi
Precautionary Statements P305+P351+P338
RTECS Number N/A
Transport Information NONH for all modes of transport
WGK Germany 3
GHS Pictograms

About Ammonium Pentaborate Tetrahydrate

Ammonium Pentaborate Tetrahydrate is generally immediately available in most volumes. American Elements manufactures materials to many standard grades when applicable including Mil Spec (military grade), ACS, Reagent and Technical Grades; Food, Agricultural and Pharmaceutical Grades, Optical, Semiconductor, and Electronics Grades, and follows applicable USP, EP/BP, and ASTM testing standards. Most materials can be produced in high and ultra high purity forms (99%, 99.9%, 99.99%, 99.999%, and higher). Standard and custom packaging is available. Additional technical, research and safety (SDS) information is available. Please request a quote above to receive pricing information based on your specifications.

Ammonium Pentaborate Tetrahydrate Synonyms

Ammonium borate tetrahydrate, CAS 12007-89-5, H4B5NO8 • 4H2O

Chemical Identifiers

Linear Formula (NH4)B5O8 • 4H2O
MDL Number MFCD13176621
EC No. 234-521-1
Pubchem CID 126455965
IUPAC Name azanium; bis(oxoboranyloxy)boranyloxy-oxoboranyloxyborinate; tetrahydrate
InchI Identifier InChI=1S/B5O8.H3N.4H2O/c6-1-10-4(9)13-5(11-2-7)12-3-8;;;;;/h;1H3;4*1H2/q-1;;;;;/p+1

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

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