- Shanghai Nianxing Industrial Co., Ltd
- China
- Product Name: 2-Butynedioic acid
- Price: Check
- Purity: 98.0%
- Stocking Period: 10 Day
- Contact: Yang
- Email: sales@echemcloud.com
- Shanghai Jizhi Biochemical Technology Co., Ltd
- China
- Product Name: 2-Butynedioic acid
- Price: ￥2018.0/100g ￥248.0/5g ￥658.0/25g
- Purity: 95.0%
- Stocking Period: Inquiry
- Contact: Liu jia
- Email: 2130147988@qq.com
- Dayang Chem (Hangzhou) Co., Ltd.
- China
- Product Name: Acetylenedicarboxylic acid
- Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Ms Wang
- Email: enquiry@dycnchem.com
- Henan Tianfu Chemical Co., Ltd.
- China
- Product Name: Acetylenedicarboxylic acid,142-45-0
- Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
- Purity: 99.0%
- Stocking Period: Inquiry
- Contact: Anson
- Email: info@tianfuchem.com
142-45-0
142-45-0 structure
- Name: 2-Butynedioic acid
- Chemical Name: butynedioic acid
- CAS Number: 142-45-0
- Molecular Formula: C4H2O4
- Molecular Weight: 114.056
- Catalog: Chemical reagent Organic reagent fatty acid
- Create Date: 2018-06-18 00:14:21
- Modify Date: 2025-08-21 10:44:11
| Name | butynedioic acid |
|---|---|
| Synonyms |
MFCD00004362
Acetylendicarboxylate EINECS 205-536-0 Acetylenedicarboxylic acid but-2-ynedioic acid 2-Butynedioic acid |
| Density | 1.7±0.1 g/cm3 |
|---|---|
| Boiling Point | 362.4±25.0 °C at 760 mmHg |
| Melting Point | 180-187 °C (dec.)(lit.) |
| Molecular Formula | C4H2O4 |
| Molecular Weight | 114.056 |
| Flash Point | 187.2±19.7 °C |
| Exact Mass | 113.995308 |
| PSA | 74.60000 |
| LogP | 0.34 |
| Vapour Pressure | 0.0±1.7 mmHg at 25°C |
| Index of Refraction | 1.560 |
| Storage condition | 2-8°C |
| Water Solubility | soluble |
| Symbol |
GHS06 |
|---|---|
| Signal Word | Danger |
| Hazard Statements | H301-H315-H319-H335 |
| Precautionary Statements | P261-P301 + P310-P305 + P351 + P338 |
| Personal Protective Equipment | Eyeshields;Faceshields;Gloves;type P2 (EN 143) respirator cartridges |
| Hazard Codes | T:Toxic;Xi:Irritant; |
| Risk Phrases | R25;R36/37/38 |
| Safety Phrases | S26-S45-S37/39 |
| RIDADR | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| Packaging Group | II |
| Hazard Class | 6.1 |
| HS Code | 29171990 |
| Precursor 8 | |
|---|---|
| DownStream 9 | |
| HS Code | 2917190090 |
|---|---|
| Summary | 2917190090 acyclic polycarboxylic 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% |