Are there usage precautions?

조성 안정화제로 사용되며, 보습력 향상과 피부 보호에 기여합니다. 주로 스킨케어 제품에서 발견됩니다.

Ingredient Dictionary

DIAMMONIUM PHOSPHATE

Diammonium hydrogen phosphate is an inorganic phosphate, being the diammonium salt of phosphoric acid.

Definition

Diammonium hydrogen phosphate is an inorganic phosphate, being the diammonium salt of phosphoric acid. The commercially available fertilizer has an analysis of 18-46-0 (N-P2O5-K2O) and is marketed under the name diammonium phosphate or DAP. It has a role as a fertilizer. It is an inorganic phosphate and an ammonium salt.

Source: PubChem

US FDA substance register · UNII 10LGE70FSU · registered name AMMONIUM PHOSPHATE, DIBASIC · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Cares for the mouthORAL CAREKeeps pH steadyBUFFERINGPrevents corrosion of packaging and equipmentANTICORROSIVE

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

Reviewed by CIR: Safety Assessment of Phosphoric Acid and Its Salts as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name リン酸二アンモニウム: 本品は、リン酸（＊）の二アンモニウム塩であり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

DIAMMONIUM PHOSPHATEINCI다이암모늄포스페이트Korean label name (MFDS standard)Phosphoric acid, diammonium saltSynonymリン酸二アンモニウムJapanese labelling name

CAS No.chemical registry number: 7783-28-0
EC No.EU chemical inventory number: 231-987-8
DTXSIDUS EPA chemical ID: DTXSID6029705
DTXCIDUS EPA compound ID: DTXCID309705

IUPAC: Diammonium hydrogen phosphate
Molecular formula: H9N2O4P
Molecular weight: 132.056 g/mol

Measured properties

Appearance: Ammonium phosphate is a white solid with a weak odor of ammonia. Sinks and mixes with water. (USCG, 1999) · Liquid, Dry Powder, Other Solid, Large Crystals, CBI
Odour: Odorless · Weak ammonia odor
Melting point: 155 °C with decomposition
Solubility: Insoluble in ethanol, acetone · 69.5 g/100 g water at 25 °C
Density: Diammonium: 1.8 at 68.0 °F Monoammonium: 1.6 at 20 °C (USCG, 1999) · 1.619 g/cu cm
Stability: Gradually loses about 8% ammonium on exposure to air
pH: pH about 8 · 8
Colour: white
Melting/freezing point: 155 ℃
Water solubility: 57.5 g/100㎖(@ 10 ℃)
Vapour density: 4.6
Relative density: 1.619
Decomposition temperature: 100 ℃
Molecular weight: 132.06

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 35 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Soil amendments6
Flavouring and nutrient6
Flame retardant6
pH regulating agent5
Corrosion inhibitor4
Processing aids not otherwise specified2
Brightener2
Adhesion/cohesion promoter1

3 other uses

Leavening agent (EPA)1
Stabilizing agent1
Surfactant (surface active agent)1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 1 eye studies are on record.

Classed as low1

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 3 studies

Category 6.3A (Category 2)
Skin Irritation · Read Across
Not likely to be sensitizing
skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay) according to EU Method B.42 (Skin Sensitisation: Local Lymph Node Assay) according to EPA OPPTS 870.2600 (Skin Sensitisation)
Category 6.4A (Category 2A)
Eye Irritation · Read Across