二磷酸四钠

Name: 二磷酸四钠
Brand: 济南圣和化工有限公司

CAS 1004291-85-3Na4P2O7MW 265.90

二磷酸四钠，CAS 登记号 1004291-85-3，由济南圣和化工有限公司现货供应，可提供纯度按批次COA提供(不公开发布) 的规格，下游主要用于有机化学品。支持样品与小批量试用，批量价格请联系我们获取，验收以批次 COA 为准。

规格参数

CAS号1004291-85-3

分子式Na4P2O7

分子量265.90

熔点1810 °F (NIOSH, 2024)

纯度按批次COA提供(不公开发布)

包装按订单/批次确认(不公开发布)

应用领域有机化学品

类别有机化学品

用途与场景

有机化学品

包装与供货

包装规格按订单/批次确认(不公开发布)

纯度规格按批次COA提供(不公开发布)

储存条件密封、阴凉干燥处保存

供货周期现货/按订单安排

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常见问题

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本页已列出二磷酸四钠的 CAS 号：1004291-85-3，可与随货 COA 核对。

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主要涉及有机化学品。

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PubChem 公开数据

Description

Sodium diphosphate tetrabasic · CAS 1004291-85-3 · Na4P2O7. UNII O352864B8Z. Melting Point: 1810 °F (NIOSH, 2024); Melting Point: 988 °C; Melting Point: 993 °C.

Identification

CAS Registry Number	1004291-85-3
PubChem CID	24403
Molecular formula	Na4P2O7
IUPAC name	tetrasodium;phosphonato phosphate
UNII (FDA)	O352864B8Z

Computed Descriptors

Molecular Weight	265.90
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	0
Exact Mass	265.87100346
Monoisotopic Mass	265.87100346
Topological Polar Surface Area	136
Heavy Atom Count	13
Formal Charge	0
Complexity	124

Physical & Chemical Properties

Melting Point	1810 °F (NIOSH, 2024)
Melting Point	988 °C
Melting Point	993 °C
Melting Point	1810 °F
Solubility	7 % at 77 °F (NIOSH, 2024)
Solubility	(77 °F): 7%
Density	2.534
Density	2.534 @25 °C
Density	2.45
Vapor Pressure	0 mmHg (approx) (NIOSH, 2024)

Physical description & handling notes

Liquid; Other Solid; Other Solid; Dry Powder; Large Crystals
Colourless or white crystals, or a white crystalline or granular powder. The decahydrate effloresces slightly in dry air
Odorless, white powder or granules. [Note: The decahydrate (Na4P2O7+10H2O) is in the form of colorless, transparent crystals.]; [NIOSH]
ODOURLESS COLOURLESS OR WHITE CRYSTALS OR POWDER.
Odorless, white powder or granules. [Note: The decahydrate (Na4P2O7 10H2O) is in the form of colorless, transparent crystals.]
CRYSTALS

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS ACIDITY_REGULATOR; EMULSIFIER; SEQUESTRANT: Food Additives ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT, FORMULATION AID, HUMECTANT, Group MTDI for phosphorus from all sources, expressed as P TRS 683-JECFA 26/25
GHS notification summary	6.2% (95 / 1523)

Regulatory & Food Contact

FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT
FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
ACIDITY_REGULATOR; EMULSIFIER; SEQUESTRANT: Food Additives
ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT, FORMULATION AID, HUMECTANT,
Group MTDI for phosphorus from all sources, expressed as P
TRS 683-JECFA 26/25

GHS notification summary

6.2% (95 / 1523)

GHS Hazard Classification

GHS notification summary	6.2% (95 / 1523)
Reported hazard statements	H302 (51.1%), H315 (13.1%), H318 (49.6%), H319 (44.2%), H335 (11.7%), H312 (100%), H332 (100%), H413 (100%)

This chemical does not meet GHS hazard criteria for 6.2% (95 of 1523) of reports.

H302 (51.1%): Harmful if swallowed [Warning Acute toxicity, oral]

Documented Uses

CIR ingredient: Tetrasodium Pyrophosphate
Used as a water softener, detergent, emulsifying agent, metal cleaner, and nutritional supplement; [ACGIH]
Acid and Alkali Cleaning of Metals [Category: Clean]
IN CLEANING CMPD, OIL-WELL DRILLING, WATER TREATMENT, CHEESE EMULSIFICATION; AS GENERAL SEQUESTERING AGENT, TO REMOVE RUST STAINS; AS INGREDIENT OF ONE-FLUID INK ERADICATORS, IN ELECTRODEPOSITION OF METALS
TEXTILE DYEING; SCOURING OF WOOL; BUFFER; SEQUESTRANT; NUTRIENT SUPPLEMENT; FOOD ADDITIVE
INDUST & INSTITUTIONAL DETERGENT BUILDER; IN WATER TREATMENT; IN HOUSEHOLD LAUNDRY DETERGENTS; IN PROCESSED CHEESES; IN OTHER FOOD APPLICATIONS; IN TEXTILE & CLAY PROCESSING, ELASTOMERS, & PAPER PROCESSING

Synonyms

Sodium pyrophosphate; TETRASODIUM PYROPHOSPHATE; 7722-88-5; TSPP; Tetrasodium diphosphate; Phosphotex; Diphosphoric acid, tetrasodium salt; Sodium diphosphate; Victor TSPP; Natrium pyrophosphat; Sodium diphosphate, anhydrous; Pyrophosphoric acid tetrasodium salt; Sodium phosphate (Na4P2O7); Sodium diphosphate (Na4P2O7); Sodium pyrophosphate, tetrabasic; DTXSID9042465

Frequently Asked Questions

What are the CAS number and molecular formula of Sodium diphosphate tetrabasic?

CAS 1004291-85-3; molecular formula Na4P2O7; molecular weight — g/mol.

What other names is Sodium diphosphate tetrabasic known by?

Sodium pyrophosphate, TETRASODIUM PYROPHOSPHATE, 7722-88-5, TSPP, Tetrasodium diphosphate, Phosphotex.

What is the regulatory status of Sodium diphosphate tetrabasic?

Documented regulatory listings: FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; ACIDITY_REGULATOR; EMULSIFIER; SEQUESTRANT: Food Additives.

Is Sodium diphosphate tetrabasic classified as hazardous?

6.2% of GHS notifications report no hazard classification (95 of 1523).

What are the key physical properties of Sodium diphosphate tetrabasic?

Melting Point: 1810 °F (NIOSH, 2024); Melting Point: 988 °C; Melting Point: 993 °C; Melting Point: 1810 °F.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.

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