Potassium hydrogen phthalate

Modify Date: 2025-08-21 12:02:16

Potassium hydrogen phthalate structure	Common Name	Potassium hydrogen phthalate
	CAS Number	877-24-7	Molecular Weight	204.221
	Density	1.006 g/mL at 20 °C	Boiling Point	378.3ºC at 760 mmHg
	Molecular Formula	C₈H₅KO₄	Melting Point	295-300 °C (dec.)(lit.)
	MSDS	Chinese USA	Flash Point	196.7ºC

Name	Potassium hydrogen phthalate
Synonym	More Synonyms

Density	1.006 g/mL at 20 °C
Boiling Point	378.3ºC at 760 mmHg
Melting Point	295-300 °C (dec.)(lit.)
Molecular Formula	C₈H₅KO₄
Molecular Weight	204.221
Flash Point	196.7ºC
Exact Mass	203.982498
PSA	77.43000
InChIKey	IWZKICVEHNUQTL-UHFFFAOYSA-M
SMILES	O=C([O-])c1ccccc1C(=O)O.[K+]
Storage condition	Store at RT.
Stability	Stable. Incompatible with strong oxidizing agents.
Water Solubility	80 G/L (20 ºC)

Potassium hydrogen phthalate MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: CZ4326000

CHEMICAL NAME :: 1,2-Benzenedicarboxylic acid, monopotassium salt

CAS REGISTRY NUMBER :: 877-24-7

LAST UPDATED :: 199707

DATA ITEMS CITED :: 3

MOLECULAR FORMULA :: C8-H5-O4.K

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >3200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: >1 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xi: Irritant;C: Corrosive;
Risk Phrases	36/38-36/37/38-34
Safety Phrases	S26-S36-S24/25-S22-S45-S36/37/39
RIDADR	UN 1789 8/PG 3
WGK Germany	1
RTECS	CZ4326000
HS Code	2916399090

Phthalic acid

CAS#:88-99-3

Potassium hydro...

CAS#:877-24-7

Literature: Physica B: Condensed Matter, , vol. 405, # 12 p. 2605 - 2609

Precursor 1
CAS#:88-99-3 Phthalic acid
DownStream 6
CAS#:85-44-9 Phthalic anhydride CAS#:7732-18-5 Water CAS#:2306-33-4 Monoethyl phthalate CAS#:34557-54-5 methane
CAS#:2305-32-0 Lura CAS#:65-85-0 benzoic acid

HS Code	2916399090
Summary	2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

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