Methylenediphosphonic acid, ≥99%

Name: Methylenediphosphonic acid, ≥99%
Brand: Vaqora Chemicals
SKU: VQ-011508

About Methylenediphosphonic acid, ≥99%

Vaqora Chemicals supplies Methylenediphosphonic acid, an organic building block registered under CAS number 1984-15-2 with a typical assay of 99%. With the molecular formula CH6O6P2, it has a molar mass of 176.0 g/mol. Its systematic (IUPAC) name is phosphonomethylphosphonic acid. It is also known as MDP or Medronic acid.

The material typically appears as a white powder. Key physical data: a melting point of 197-209 °C. Keep the material at 2–8 °C and protect it from moisture. It carries the GHS signal word “Danger” with 1 hazard statement. Review the Safety Data Sheet before use.

It is commonly used for organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 1 g, 5 g and 25 g, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Methylenediphosphonic acid, ≥99%
Catalogue No.	VQ-011508
CAS Number	1984-15-2
IUPAC name	phosphonomethylphosphonic acid
Molecular formula	CH₆O₆P₂
Molecular weight	176 g/mol
Exact mass	175.964
Purity / assay	99%
HSN code	29319090
InChIKey	MBKDYNNUVRNNRF-UHFFFAOYSA-N
SMILES	C(P(=O)(O)O)P(=O)(O)O
PubChem CID	16124

Physical properties
Physical form	Powder
Appearance	White powder
Melting point	197-209 °C
LogP (XLogP3)	-3.3
H-bond donors / acceptors	4 / 6
TPSA	115 Å²
Storage	2–8 °C
UN number	UN 3261
Synonyms	MDP, Medronic acid, Phosphonic acid, methylenebis-, Medronate, Acido medronico, Acide medronique, Methylenebis(phosphonic acid), methanediphosphonic acid, Acidum medronicum, methanebisphosphonic acid, Methylene-1,1-bisphosphonic acid, Phosphonic acid, methylenedi-

Safety & hazard information (GHS)

Corrosive

Signal word: Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements: P260, P264, P280, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P321, P363, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 1984-15-2

Methylenediphosphonic acid, ≥97%

CAS: 1984-15-2
Formula: CH₆O₆P₂
MW: 176 g/mol

VQ-011507

Frequently asked questions

What is the CAS number of Methylenediphosphonic acid, ≥99%?

The CAS Registry Number of Methylenediphosphonic acid, ≥99% is 1984-15-2. It is also known as MDP, Medronic acid, Phosphonic acid, methylenebis-.

What is the molecular formula and molecular weight of Methylenediphosphonic acid, ≥99%?

Methylenediphosphonic acid, ≥99% has the molecular formula CH6O6P2 and a molecular weight of 176 g/mol. Its IUPAC name is phosphonomethylphosphonic acid.

Which grade and pack sizes of Methylenediphosphonic acid, ≥99% can I order?

We supply Methylenediphosphonic acid, ≥99% in (99%) grade, in 1 g, 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Methylenediphosphonic acid, ≥99%?

Yes. Every lot of Methylenediphosphonic acid, ≥99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Methylenediphosphonic acid, ≥99% be shipped internationally?

Yes. Methylenediphosphonic acid, ≥99% is classified as hazardous (UN 3261), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.

How should Methylenediphosphonic acid, ≥99% be stored?

2–8 °C. Keep the container tightly closed and refer to the SDS for full handling guidance.