Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2,5-Dimethyl-3-hexyne-2,5-diol
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Henan Tianfu Chemical Co., Ltd.
China
Product Name: 2,5-Dimethyl-3-Hexyne-2,5-Diol--
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Purity: 99.0%
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142-30-3

142-30-3 structure

142-30-3 structure

Name: 2,5-Dimethyl-3-hexyne-2,5-diol
Chemical Name: 2,5-Dimethyl-3-hexyne-2,5-diol
CAS Number: 142-30-3
Molecular Formula: C₈H₁₄O₂
Molecular Weight: 142.196
Catalog: Catalysts and additives polymer
Create Date: 2018-12-24 17:28:49
Modify Date: 2026-07-01 18:48:15

Name	2,5-Dimethyl-3-hexyne-2,5-diol
Synonyms	tetramethyl-2-butynediol 2,5-Dimethyl-3-hexyne-2,5-diol, di + meso QX1&1&1UU1XQ1&1 1,1,4,4-TETRAMETHYLBUTYNEDIOL 2,5-Dimethyl-3-hexene-2,5-diol HD-M (2.5-diMethyl-2.5-hexynediol) 2,5-Dimethylhexyne-2,5-diol 2,5-DIMETHYL-3-HEZYNE-2,5-DIOL Bexotene Impurity 13 DIMETHYL HEXYNEDIOL 2,5-DIMETHYL-2,5-HEXYNEDIOL 2,5-Dimethyl-3-hexyne-2,5-diol > 2,5-DIMETHYL-3-HEXYNE-2,5-DIOL 2,5-Dimethyl-2,5-hexynediol(HD-M) 3-Hexyne-2,5-diol, 2,5-dimethyl 2,5-Dihydroxy-2,5-dimethyl-3-hexyne Hexadiindiol 2,5-Dimethyl-2,5-hexynediol 2,5-DIMETHYL-3-HEXYNE-2,5-DIOL FOR SYNTH 2,5-DiMethylhex-3-ene-2,5-diol MFCD00004468 2,5-DIHYDROXY-2,5-DIMETHYL-3-HEXYNE HD-M Tetramethylbutynediol acetyleninacol tetramethyl-2-butyn-1,4-diol 2,5-dimethyl-3-hexyne-2,5-diol, dl + meso d43 2,5-Dimethylhex-3-yne-2,5-diol 2,5-DIMETHYL-3-HEXYN-2,5-DIOL 2,5-dimethyl-3-hexyne-1,1-diol 2,5-Dimethylhexynediol 2,5-DIMETHYL-3-HEXYN-2,5-DIOL, 2,5-DIMETHYL-3-HEXYN-2,5-DIOL, 2,5-DIMETHYL-3-HEXYN-2,5-DIOL 2,5-dimethyl-3-hexyne-5-diol 2,5-Dimethyl-3-hexyn Kemitracin-50 2,5-dimethylhex-3-yne-2,5-diol olfiney 2,5-dimethylhexyne-2,5-diol DiMethyl-3-hexyne 1,1-Dimethyl-2-propynyl-1-amine (MPA) EINECS 205-533-4 2,5-Dimethylhex-3-ene-2,5-diol 2,5-dimethyl-2,5-hexyneldiol 3-hexyne-2,5-dioL 2,5-Dimethyl-3-hexyne-2,5-diol, (±) + meso

Density	1.0±0.1 g/cm3
Boiling Point	205.0±8.0 °C at 760 mmHg
Melting Point	90-94 °C(lit.)
Molecular Formula	C₈H₁₄O₂
Molecular Weight	142.196
Flash Point	86.0±13.0 °C
Exact Mass	142.099380
PSA	40.46000
LogP	0.29
Vapour Pressure	0.1±0.9 mmHg at 25°C
Index of Refraction	1.489
Water Solubility	240 g/L (20 ºC)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: MR0176000

CHEMICAL NAME :: 3-Hexyne-2,5-diol, 2,5-dimethyl-

CAS REGISTRY NUMBER :: 142-30-3

LAST UPDATED :: 199712

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C8-H14-O2

MOLECULAR WEIGHT :: 142.22

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >500 mg/kg

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

REFERENCE :: CBCCT* "Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. (National Academy of Science Library, 2101 Constitution Ave., NW, Washington, DC 20418) Volume(issue)/page/year: 4,378,1952

Symbol	GHS08
Signal Word	Danger
Hazard Statements	H317-H334
Precautionary Statements	P261-P280-P342 + P311
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Faceshields;Gloves
Hazard Codes	Xn
Risk Phrases	R42/43
Safety Phrases	S7-S36-S24/25
RIDADR	NONH for all modes of transport
WGK Germany	3
RTECS	MR0176000
HS Code	29053980

Precursor 10
67-64-1 74-86-2 115-19-5 78-83-1
12212-46-3 75-20-7 70947-32-9 4301-15-9
67-56-1 201230-82-2
DownStream 10
10557-44-5 692-70-6 764-13-6 3730-60-7
110-03-2 592-13-2 14335-62-7 3725-05-1
594-61-6 64-18-6

HS Code	2905399090
Summary	2905399090 other diols。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:5.5%。general tariff:30.0%

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