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Merck

466123

Phosphoric acid

greener alternative

crystalline, ≥99.999% trace metals basis

Synonym(s):

Orthophosphoric acid

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About This Item

Linear Formula:
H3PO4
CAS Number:
7664-38-2
Molecular Weight:
98.00
Beilstein:
1921286
EC Number:
231-633-2
MDL number:
MFCD00011340
UNSPSC Code:
12352300
PubChem Substance ID:
24870329
NACRES:
NA.23

Key Documents

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vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

Assay

≥99.999% trace metals basis

form

crystalline

greener alternative product characteristics

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bp

158 °C (lit.)

mp

~40 °C (lit.)
41-44 °C

density

1.685 g/mL at 25 °C (lit.)
1.830 g/mL at 25 °C

greener alternative category

Enabling

SMILES string

OP(O)(O)=O

InChI

1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)

InChI key

NBIIXXVUZAFLBC-UHFFFAOYSA-N

Gene Information

human ... SRC(6714)

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1 of 4

This Item
30417-M452289612162
Phosphoric acid crystalline, ≥99.999% trace metals basis

Sigma-Aldrich

466123

Phosphoric acid

Phosphoric acid puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥85%

Sigma-Aldrich

30417-M

Phosphoric acid

Phosphoric acid ≥85 wt. % in H2O, ≥99.999% trace metals basis

Sigma-Aldrich

452289

Phosphoric acid

Phosphoric acid solution suitable for NMR (reference standard), 85% in D2O (99.9 atom % D), NMR tube size 4.2 mm × 8 in. , WGS-5BL Coaxial NMR tube

Sigma-Aldrich

612162

Phosphoric acid solution

assay

≥99.999% trace metals basis

assay

≥85%

assay

≥99.999% trace metals basis

assay

83.5-86.5% (gravimetric)

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

200

form

crystalline

form

liquid

form

liquid

form

solution

vapor pressure

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

vapor pressure

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

vapor pressure

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

vapor pressure

-

vapor density

3.4 (vs air)

vapor density

3.4 (vs air)

vapor density

3.4 (vs air)

vapor density

-

density

1.685 g/mL at 25 °C (lit.), 1.830 g/mL at 25 °C

density

1.685 g/mL at 25 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

density

1.481 g/cm3

General description

Anhydrous phosphoric acid is a white solid which melts at 42.35oC to form a viscous liquid. In aqueous solution phosphoric acid behaves as a triprotic acid, having three ionizable hydrogen atoms.
We are committed to bringing you Greener Alternative Products, which belong to one of the four categories of greener alternatives. Phosphoric acid-doped polybenzimidazole (PBI) membranes offer a cleaner path to energy by enabling high-temperature fuel cells that efficiently convert hydrogen into electricity with low emissions. Their durability and proton conductivity make them ideal for sustainable power systems. Click here for more information.

Application

Industrially, phosphoric acid may be used in pharmaceuticals, water softeners.

Packaging

Packaged in poly bottles

Other Notes

Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous).

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H290,H302,H314

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ7448
MKCX9063
MKCX5361
MKCX0627
MKCW9148

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Alex W Gregory et al.
Organic letters, 15(17), 4330-4333 (2013-08-30)
A highly enantioselective hydroamination/N-sulfonyliminium cyclization cascade is reported using a combination of gold(I) and chiral phosphoric acid catalysts. An initial 5-exo-dig hydroamination and a subsequent phosphoric acid catalyzed cyclization process provide access to complex sulfonamide scaffolds in excellent yield and
W M Fennis et al.
Journal of dental research, 93(1), 36-41 (2013-10-25)
The objective of this randomized control trial was to compare the five-year clinical performance of direct and indirect resin composite restorations replacing cusps. In 157 patients, 176 restorations were made to restore maxillary premolars with Class II cavities and one
Li Yan Chan et al.
The Journal of organic chemistry, 78(17), 8826-8832 (2013-08-07)
A simple and efficient method is developed for Pd-catalyzed ortho-acetoxylation using organophosphates, namely, benzylic phosphonic and aryl phosphoric monoacids, as the directing group.
Amit Kumar Sinha et al.
PloS one, 9(4), e95319-e95319 (2014-04-18)
Oxidative stress and the antioxidant response induced by high environmental ammonia (HEA) were investigated in the liver and gills of three freshwater teleosts differing in their sensitivities to ammonia. The highly ammonia-sensitive salmonid Oncorhynchus mykiss (rainbow trout), the less ammonia
Mian Qi et al.
Journal of the American Chemical Society, 136(43), 15366-15378 (2014-10-18)
Distance measurement in the nanometer range by electron paramagnetic resonance spectroscopy (EPR) in combination with site-directed spin labeling is a very powerful tool to monitor the structure and dynamics of biomacromolecules in their natural environment. However, in-cell application is hampered
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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