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Sodium Acid Pyrophosphate (SAPP)

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Sodium Acid Pyrophosphate (SAPP) is a white, crystalline inorganic chemical commonly used as a leavening agent and emulsifier in the food industry. It functions by releasing carbon dioxide when reacted with baking soda, helping doughs and batters to rise. SAPP is also utilized for its ability to chelate metal ions and improve the texture and appearance of processed foods. It meets food-grade standards and is valued for its consistent performance and stability.

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Description

 

Primary Uses

Food Industry
Acts as a leavening acid in baking powders, working with sodium bicarbonate to produce carbon dioxide gas that causes dough to rise.

Used in processed seafood and meats to improve texture and moisture retention.

Functions as a sequestrant to prevent discoloration and oxidation in canned foods and processed cheese.

Beverage Industry
Employed in soft drink formulations as an acidulant to control pH and improve flavor stability.

 

Secondary Uses

Pharmaceuticals
Used as a buffering agent in some medicinal formulations.

Water Treatment
Applied as a scale inhibitor and dispersant in industrial water treatment processes.

Cosmetics
Occasionally used as a pH adjuster and chelating agent in personal care products.

PRODUCT KEY FEATURES

 

Basic Identification Attributes
Chemical Name (IUPAC): Disodium dihydrogen diphosphate

Common/Trade Name: Sodium Acid Pyrophosphate (SAPP)

CAS Number: 7758-16-9

HS Code: 2835.29

Synonyms: Sodium acid pyrophosphate, disodium dihydrogen diphosphate

 

Physical & Chemical Properties
Physical State: White crystalline powder

Color & Odor: White; odorless

Solubility: Soluble in water

pH (1% solution): Approx. 4.5 - 6.5

Melting Point: Decomposes before melting

 

Safety & Hazard Attributes
GHS Classification: Generally regarded as safe (GRAS) for food use

Toxicity: Low; safe at approved usage levels

Exposure Limits: Follow food safety regulations

 

Storage & Handling Attributes
Storage Conditions: Store in a cool, dry place in sealed containers away from moisture

Container Type: Bags or drums, food-grade packaging

Shelf Life: Typically 2 years if stored properly

Handling Precautions: Avoid dust formation; use protective masks if handling large quantities

 

Regulatory & Compliance Attributes
Approved by FDA, EFSA, and other international food safety authorities for direct food use

Complies with food additive standards (e.g., FCC)

 

Environmental & Health Impact
Biodegradability: Readily biodegradable

Ecotoxicity: Low toxicity to aquatic organisms

Bioaccumulation: Not significant

SAFETY HANDLING PRECAUTIONS

PPE Required: Gloves, dust mask, and eye protection recommended

Handling Guidelines: Use in well-ventilated areas; avoid inhalation of dust

Storage Measures: Keep containers tightly closed and stored in a dry environment

 

First Aid Measures
Inhalation: Move to fresh air; seek medical attention if irritation occurs

Skin Contact: Wash with soap and water; seek medical advice if irritation persists

Eye Contact: Rinse thoroughly with water for 15 minutes; get medical attention if necessary

Ingestion: Rinse mouth; seek medical advice if large quantities ingested

 

Firefighting Measures
Fire Hazards: Non-flammable

Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ for surrounding fires

Special Precautions: Wear protective equipment if handling large amounts during fire

Hazardous Combustion Products: May produce toxic phosphorus oxides on decomposition

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